3 files changed, 16 insertions, 6 deletions

diff --git a/engines/scumm/object.cpp b/engines/scumm/object.cpp
index f4aea93b8b..df0b3e1035 100644
--- a/engines/scumm/object.cpp
+++ b/engines/scumm/object.cpp
@@ -45,6 +45,7 @@ void ScummEngine::addObjectToInventory(uint obj, uint room) {
 		idx = getObjectIndex(obj);
 		assert(idx >= 0);
 		ptr = getResourceAddress(rtFlObject, _objs[idx].fl_object_index) + 8;
+		assert(ptr);
 		size = READ_BE_UINT32(ptr + 4);
 	} else {
 		findObjectInRoom(&foir, foCodeHeader, obj, room);
@@ -742,6 +743,7 @@ void ScummEngine::resetRoomObjects() {
 	const CodeHeader *cdhd;
 
 	room = getResourceAddress(rtRoom, _roomResource);
+	assert(room);
 
 	if (_numObjectsInRoom == 0)
 		return;
@@ -756,7 +758,7 @@ void ScummEngine::resetRoomObjects() {
 	assert(searchptr);
 
 	// Load in new room objects
-	ResourceIterator	obcds(searchptr, false);
+	ResourceIterator obcds(searchptr, false);
 	for (i = 0; i < _numObjectsInRoom; i++) {
 		od = &_objs[findLocalObjectSlot()];
 
@@ -784,7 +786,7 @@ void ScummEngine::resetRoomObjects() {
 	}
 
 	searchptr = room;
-	ResourceIterator	obims(room, false);
+	ResourceIterator obims(room, false);
 	for (i = 0; i < _numObjectsInRoom; i++) {
 		ptr = obims.findNext(MKTAG('O','B','I','M'));
 		if (ptr == NULL)
@@ -810,6 +812,7 @@ void ScummEngine_v3old::resetRoomObjects() {
 	const byte *room, *ptr;
 
 	room = getResourceAddress(rtRoom, _roomResource);
+	assert(room);
 
 	if (_numObjectsInRoom == 0)
 		return;
@@ -854,6 +857,7 @@ void ScummEngine_v4::resetRoomObjects() {
 	const byte *room;
 
 	room = getResourceAddress(rtRoom, _roomResource);
+	assert(room);
 
 	if (_numObjectsInRoom == 0)
 		return;
@@ -861,7 +865,7 @@ void ScummEngine_v4::resetRoomObjects() {
 	if (_numObjectsInRoom > _numLocalObjects)
 		error("More than %d objects in room %d", _numLocalObjects, _roomResource);
 
-	ResourceIterator	obcds(room, true);
+	ResourceIterator obcds(room, true);
 	for (i = 0; i < _numObjectsInRoom; i++) {
 		od = &_objs[findLocalObjectSlot()];
 
@@ -878,7 +882,7 @@ void ScummEngine_v4::resetRoomObjects() {
 		}
 	}
 
-	ResourceIterator	obims(room, true);
+	ResourceIterator obims(room, true);
 	for (i = 0; i < _numObjectsInRoom; i++) {
 		// In the PC Engine version of Loom, there aren't image blocks
 		// for all objects.
@@ -979,10 +983,12 @@ void ScummEngine::resetRoomObject(ObjectData *od, const byte *room, const byte *
 	assert(room);
 
 	if (searchptr == NULL) {
-		if (_game.version == 8)
+		if (_game.version == 8) {
 			searchptr = getResourceAddress(rtRoomScripts, _roomResource);
-		else
+			assert(searchptr);
+		} else {
 			searchptr = room;
+		}
 	}
 
 	cdhd = (const CodeHeader *)findResourceData(MKTAG('C','D','H','D'), searchptr + od->OBCDoffset);
diff --git a/engines/scumm/players/player_ad.cpp b/engines/scumm/players/player_ad.cpp
index 7f0f449a92..40f4ec93c9 100644
--- a/engines/scumm/players/player_ad.cpp
+++ b/engines/scumm/players/player_ad.cpp
@@ -97,6 +97,7 @@ void Player_AD::startSound(int sound) {
 
 	// Query the sound resource
 	const byte *res = _vm->getResourceAddress(rtSound, sound);
+	assert(res);
 
 	if (res[2] == 0x80) {
 		// Stop the current sounds
diff --git a/engines/scumm/players/player_towns.cpp b/engines/scumm/players/player_towns.cpp
index 16080205c0..a1add906bb 100644
--- a/engines/scumm/players/player_towns.cpp
+++ b/engines/scumm/players/player_towns.cpp
@@ -236,6 +236,8 @@ void Player_Towns_v1::setMusicVolume(int vol) {
 
 void Player_Towns_v1::startSound(int sound) {
 	uint8 *ptr = _vm->getResourceAddress(rtSound, sound);
+	assert(ptr);
+
 	if (_vm->_game.version != 3)
 		ptr += 2;
 
@@ -620,6 +622,7 @@ int Player_Towns_v2::getSoundStatus(int sound) const {
 
 void Player_Towns_v2::startSound(int sound) {
 	uint8 *ptr = _vm->getResourceAddress(rtSound, sound);
+	assert(ptr);
 
 	if (READ_BE_UINT32(ptr) == MKTAG('T','O','W','S')) {
 		_soundOverride[sound].type = 7;