JANITORIAL: Silence more GCC 7 warnings

There were all flagged as intentional fall throughs. I simply changed
the comments to something GCC would recognize.

7 files changed, 19 insertions, 18 deletions

diff --git a/engines/dm/champion.cpp b/engines/dm/champion.cpp
index 374f211ace..646e7cec8d 100644
--- a/engines/dm/champion.cpp
+++ b/engines/dm/champion.cpp
@@ -729,7 +729,7 @@ Thing ChampionMan::getObjectRemovedFromSlot(uint16 champIndex, uint16 slotIndex)
 			switch (curIconIndex) {
 			case kDMIconIndiceContainerChestClosed:
 				inventory.closeChest();
-			// No break on purpose
+				// fall through
 			case kDMIconIndiceScrollOpen:
 			case kDMIconIndiceScrollClosed:
 				setFlag(curChampion->_attributes, kDMAttributePanel);
diff --git a/engines/dm/dungeonman.cpp b/engines/dm/dungeonman.cpp
index 2d0d65f2a4..ab35477183 100644
--- a/engines/dm/dungeonman.cpp
+++ b/engines/dm/dungeonman.cpp
@@ -935,7 +935,7 @@ T0172010_ClosedFakeWall:
 		}
 		aspectArray[kDMSquareAspectElement] = kDMElementTypeCorridor;
 		AL0307_uc_FootprintsAllowed = getFlag(AL0307_uc_Square, kDMSquareMaskFakeWallRandOrnamentOrFootprintsAllowed) ? 8 : 0;
-		// No break on purpose
+		// fall through
 	case kDMElementTypeCorridor:
 	case kDMElementTypePit:
 	case kDMElementTypeTeleporter:
diff --git a/engines/dm/gfx.cpp b/engines/dm/gfx.cpp
index 654cd04c14..7f31b29575 100644
--- a/engines/dm/gfx.cpp
+++ b/engines/dm/gfx.cpp
@@ -1463,7 +1463,7 @@ void DisplayMan::drawSquareD3L(Direction dir, int16 posX, int16 posY) {
 	case kDMElementTypePit:
 		if (!squareAspect[kDMSquareAspectPitInvisible])
 			drawFloorPitOrStairsBitmap(kDMGraphicIdxFloorPitD3L, frameFloorPitD3L);
-	// no break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackLeftBackRightFrontLeftFrontRight;
@@ -1546,7 +1546,7 @@ void DisplayMan::drawSquareD3R(Direction dir, int16 posX, int16 posY) {
 	case kDMElementTypePit:
 		if (!squareAspect[kDMSquareAspectPitInvisible])
 			drawFloorPitOrStairsBitmapFlippedHorizontally(kDMGraphicIdxFloorPitD3L, frameFloorPitD3R);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackRightBackLeftFrontRightFrontLeft;
@@ -1626,7 +1626,7 @@ void DisplayMan::drawSquareD3C(Direction dir, int16 posX, int16 posY) {
 	case kDMElementTypePit:
 		if (!squareAspect[kDMSquareAspectPitInvisible])
 			drawFloorPitOrStairsBitmap(kDMGraphicIdxFloorPitD3C, frameFloorPitD3C);
-	// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackLeftBackRightFrontLeftFrontRight;
@@ -1690,7 +1690,7 @@ void DisplayMan::drawSquareD2L(Direction dir, int16 posX, int16 posY) {
 		break;
 	case kDMElementTypeStairsSide:
 		drawFloorPitOrStairsBitmap(_stairsNativeBitmapIndexSideD2L, frameStairsSideD2L);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeDoorSide:
 		order = kDMCellOrderBackRightFrontLeftFrontRight;
 		drawFloorOrnament(squareAspect[kDMSquareAspectFloorOrn], kDMViewFloorD2L); /* BUG0_64 Floor ornaments are drawn over open pits. There is no check to prevent drawing floor ornaments over open pits */
@@ -1706,7 +1706,7 @@ void DisplayMan::drawSquareD2L(Direction dir, int16 posX, int16 posY) {
 	case kDMElementTypePit:
 		drawFloorPitOrStairsBitmap(squareAspect[kDMSquareAspectPitInvisible] ? kDMGraphicIdxFloorPitInvisibleD2L : kDMGraphicIdxFloorPitD2L,
 										frameFloorPitD2L);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackLeftBackRightFrontLeftFrontRight;
@@ -1775,7 +1775,7 @@ void DisplayMan::drawSquareD2R(Direction dir, int16 posX, int16 posY) {
 		break;
 	case kDMElementTypeStairsSide:
 		drawFloorPitOrStairsBitmapFlippedHorizontally(_stairsNativeBitmapIndexSideD2L, frameStairsSideD2R);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeDoorSide:
 		order = kDMCellOrderBackLeftFrontRightFrontLeft;
 		/* BUG0_64 Floor ornaments are drawn over open pits. There is no check to prevent drawing floor ornaments over open pits */
@@ -1793,7 +1793,7 @@ void DisplayMan::drawSquareD2R(Direction dir, int16 posX, int16 posY) {
 	case kDMElementTypePit:
 		drawFloorPitOrStairsBitmapFlippedHorizontally(
 			squareAspect[kDMSquareAspectPitInvisible] ? kDMGraphicIdxFloorPitInvisibleD2L : kDMGraphicIdxFloorPitD2L, frameFloorPitD2R);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackRightBackLeftFrontRightFrontLeft;
@@ -1876,7 +1876,7 @@ void DisplayMan::drawSquareD2C(Direction dir, int16 posX, int16 posY) {
 		break;
 	case kDMElementTypePit:
 		drawFloorPitOrStairsBitmap(squareAspect[kDMSquareAspectPitInvisible] ? kDMGraphicIdxFloorPitInvisibleD2C : kDMGraphicIdxFloorPitD2C, frameFloorPitD2C);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackLeftBackRightFrontLeftFrontRight;
@@ -1944,7 +1944,7 @@ void DisplayMan::drawSquareD1L(Direction dir, int16 posX, int16 posY) {
 			drawFloorPitOrStairsBitmap(_stairsNativeBitmapIndexUpSideD1L, frameStairsUpSideD1L);
 		else
 			drawFloorPitOrStairsBitmap(_stairsNativeBitmapIndexDownSideD1L, frameStairsDownSideD1L);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeDoorSide:
 		order = kDMCellOrderBackRightFrontRight;
 		/* BUG0_64 Floor ornaments are drawn over open pits. There is no check to prevent drawing floor ornaments over open pits */
@@ -1961,7 +1961,7 @@ void DisplayMan::drawSquareD1L(Direction dir, int16 posX, int16 posY) {
 		break;
 	case kDMElementTypePit:
 		drawFloorPitOrStairsBitmap(squareAspect[kDMSquareAspectPitInvisible] ? kDMGraphicIdxFloorPitInvisibleD1L : kDMGraphicIdxFloorPitD1L, frameFloorPitD1L);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackRightFrontRight;
@@ -2029,7 +2029,7 @@ void DisplayMan::drawSquareD1R(Direction dir, int16 posX, int16 posY) {
 		else
 			drawFloorPitOrStairsBitmapFlippedHorizontally(_stairsNativeBitmapIndexDownSideD1L, frameStairsDownSideD1R);
 
-		// No break on purpose
+		// fall through
 	case kDMElementTypeDoorSide:
 		order = kDMCellOrderBackLeftFrontLeft;
 		drawFloorOrnament(squareAspect[kDMSquareAspectFloorOrn], kDMViewFloorD1R); /* BUG0_64 Floor ornaments are drawn over open pits. There is no check to prevent drawing floor ornaments over open pits */
@@ -2046,7 +2046,7 @@ void DisplayMan::drawSquareD1R(Direction dir, int16 posX, int16 posY) {
 	case kDMElementTypePit:
 		drawFloorPitOrStairsBitmapFlippedHorizontally(squareAspect[kDMSquareAspectPitInvisible] ? kDMGraphicIdxFloorPitInvisibleD1L
 														   : kDMGraphicIdxFloorPitD1L, frameFloorPitD1R);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackLeftFrontLeft;
@@ -2134,7 +2134,7 @@ void DisplayMan::drawSquareD1C(Direction dir, int16 posX, int16 posY) {
 		break;
 	case kDMElementTypePit:
 		drawFloorPitOrStairsBitmap(squareAspect[kDMSquareAspectPitInvisible] ? kDMGraphicIdxFloorPitInvisibleD1C : kDMGraphicIdxFloorPitD1C, frameFloorPitD1C);
-		// No break on purpose
+		// fall through
 	case kDMElementTypeTeleporter:
 	case kDMElementTypeCorridor:
 		order = kDMCellOrderBackLeftBackRightFrontLeftFrontRight;
diff --git a/engines/dm/group.cpp b/engines/dm/group.cpp
index 43d5dc8a9d..9bfeb1da1d 100644
--- a/engines/dm/group.cpp
+++ b/engines/dm/group.cpp
@@ -727,6 +727,7 @@ T0209005_AddEventAndReturn:
 				if (AL0446_i_Behavior2Or3 || (_vm->getRandomNumber(4))) /* BUG0_00 Useless code. Behavior cannot be 2 nor 3 because these values are never used. The actual condition is thus: if 3/4 chances then no reaction */
 					return;
 			} /* No 'break': proceed to instruction after the next 'case' below. Reaction is to move in a random direction to try and avoid other projectiles */
+			// fall through
 		case kDMEventTypeCreateReactionDangerOnSquare: /* This event is used when some creatures in the group were killed by a Poison Cloud or by a closing door or if Lord Chaos is surrounded by 3 Fluxcages. It causes the creature to move in a random direction to avoid the danger */
 			approachAfterReaction = (AL0447_i_Behavior == kDMBehaviorAttack); /* If the creature behavior is 'Attack' and it has to move to avoid danger then it will change its behavior to 'Approach' after the movement */
 			newGroupDirectionFound = false;
diff --git a/engines/dm/menus.cpp b/engines/dm/menus.cpp
index 348bdfdb2d..9c8e219851 100644
--- a/engines/dm/menus.cpp
+++ b/engines/dm/menus.cpp
@@ -1154,7 +1154,7 @@ bool MenuMan::isActionPerformed(uint16 champIndex, int16 actionIndex) {
 		break;
 	case kDMActionConfuse:
 		decrementCharges(curChampion);
-		// No break on purpose
+		// fall through
 	case kDMActionWarCry:
 	case kDMActionCalm:
 	case kDMActionBrandish:
diff --git a/engines/dm/movesens.cpp b/engines/dm/movesens.cpp
index cb9f93ab2b..410ede740a 100644
--- a/engines/dm/movesens.cpp
+++ b/engines/dm/movesens.cpp
@@ -105,7 +105,7 @@ bool MovesensMan::sensorIsTriggeredByClickOnWall(int16 mapX, int16 mapY, uint16
 			case kDMSensorWallOrnClickWithSpecObjRemovedRotateSensors:
 				if (sensorCountToProcessPerCell[cellIdx]) /* If the sensor is not the last one of its type on the cell */
 					continue;
-				// No break on purpose
+				// fall through
 			case kDMSensorWallOrnClickWithSpecObj:
 			case kDMSensorWallOrnClickWithSpecObjRemoved:
 				doNotTriggerSensor = ((sensorData == _vm->_objectMan->getObjectType(leaderHandObject)) == currentSensor->getAttrRevertEffectA());
diff --git a/engines/dm/sounds.cpp b/engines/dm/sounds.cpp
index bd7d4042f8..a4de3c3984 100644
--- a/engines/dm/sounds.cpp
+++ b/engines/dm/sounds.cpp
@@ -43,7 +43,7 @@ SoundMan *SoundMan::getSoundMan(DMEngine *vm, const DMADGameDescription *gameVer
 	switch (gameVersion->_desc.platform) {
 	default:
 		warning("Unknown platform, using default Amiga SoundMan");
-		// No break on purpose
+		// fall through
 	case Common::kPlatformAmiga:
 		return new SoundMan(vm);
 	case Common::kPlatformAtariST: