MADS: Plug some memory leaks

Surfaces should be freed (to free their inner allocated surface
buffers) before being deleted

5 files changed, 10 insertions, 2 deletions

diff --git a/engines/mads/game.cpp b/engines/mads/game.cpp
index 72d7988c05..3d1c194612 100644
--- a/engines/mads/game.cpp
+++ b/engines/mads/game.cpp
@@ -100,6 +100,7 @@ Game::~Game() {
 	}
 
 	delete _saveFile;
+	_surface->free();
 	delete _surface;
 	delete _sectionHandler;
 }
diff --git a/engines/mads/nebular/dialogs_nebular.cpp b/engines/mads/nebular/dialogs_nebular.cpp
index 10715797ed..5b9942db07 100644
--- a/engines/mads/nebular/dialogs_nebular.cpp
+++ b/engines/mads/nebular/dialogs_nebular.cpp
@@ -430,7 +430,7 @@ void CopyProtectionDialog::show() {
 	draw();
 
 	Common::KeyState curKey;
-	Common::Rect inputArea(110, 165, 210, 175);
+	const Common::Rect inputArea(110, 165, 210, 175);
 	MSurface *origInput = new MSurface(inputArea.width(), inputArea.height());
 	_vm->_screen.frameRect(inputArea, TEXTDIALOG_BLACK);
 	_vm->_screen.copyTo(origInput, inputArea, Common::Point(0, 0));
@@ -471,6 +471,7 @@ void CopyProtectionDialog::show() {
 		_vm->_screen.updateScreen();
 	}
 
+	origInput->free();
 	delete origInput;
 }
 
@@ -592,6 +593,7 @@ void PictureDialog::save() {
 void PictureDialog::restore() {
 	if (_savedSurface) {
 		_savedSurface->copyTo(&_vm->_screen);
+		_savedSurface->free();
 		delete _savedSurface;
 		_savedSurface = nullptr;
 
diff --git a/engines/mads/scene_data.cpp b/engines/mads/scene_data.cpp
index d0e96be1d7..e594406447 100644
--- a/engines/mads/scene_data.cpp
+++ b/engines/mads/scene_data.cpp
@@ -451,6 +451,8 @@ void SceneInfo::loadMadsV2Background(int sceneId, const Common::String &resName,
 
 		fab.decompress(compressedTileData, compressedTileDataSize, (byte*)newTile->getPixels(), tileWidth * tileHeight);
 		tileSet.push_back(TileSetList::value_type(newTile));
+		newTile->free();
+		delete newTile;
 		delete[] compressedTileData;
 	}
 
diff --git a/engines/mads/sprites.cpp b/engines/mads/sprites.cpp
index bc36b5575a..f15d6456d3 100644
--- a/engines/mads/sprites.cpp
+++ b/engines/mads/sprites.cpp
@@ -347,8 +347,10 @@ void SpriteSlots::drawSprites(MSurface *s) {
 				spr->copyTo(s, Common::Point(xp, yp), sprite->getTransparencyIndex());
 
 				// Free sprite if it was a flipped one
-				if (flipped)
+				if (flipped) {
+					spr->free();
 					delete spr;
+				}
 			}
 		}
 	}
diff --git a/engines/mads/user_interface.cpp b/engines/mads/user_interface.cpp
index 93a555d9c7..1e5a1d80d2 100644
--- a/engines/mads/user_interface.cpp
+++ b/engines/mads/user_interface.cpp
@@ -164,6 +164,7 @@ void UISlots::draw(bool updateFlag, bool delFlag) {
 						MSurface *spr = sprite->flipHorizontal();
 						userInterface.mergeFrom(spr, spr->getBounds(), slot._position,
 							sprite->getTransparencyIndex());
+						spr->free();
 						delete spr;
 					} else {
 						userInterface.mergeFrom(sprite, sprite->getBounds(), slot._position,