ASYLUM: fix initialization on Linux systems

The casting of event.type to uint32 was failing silently on non-Windows
systems. Replacing these with int32 casts resolved the issue.

Thanks to Littleboy for spotting this.

engines/asylum/puzzles/puzzle.cpp

@@ -50,7 +50,7 @@ Puzzle::~Puzzle() {
 // Event Handling
 //////////////////////////////////////////////////////////////////////////
 bool Puzzle::handleEvent(const AsylumEvent &evt) {
-	switch ((uint32)evt.type) {
+	switch ((int32)evt.type) {
 	default:
 		break;
 

engines/asylum/resources/encounters.cpp

@@ -290,7 +290,7 @@ void Encounter::exitEncounter() {
 // Message handler
 //////////////////////////////////////////////////////////////////////////
 bool Encounter::handleEvent(const AsylumEvent &evt) {
-	switch ((uint32)evt.type) {
+	switch ((int32)evt.type) {
 	default:
 		break;
 

engines/asylum/views/menu.cpp

@@ -314,7 +314,7 @@ Common::String Menu::getChapterName() {
 // Event Handler
 //////////////////////////////////////////////////////////////////////////
 bool Menu::handleEvent(const AsylumEvent &evt) {
-	switch ((uint32)evt.type) {
+	switch ((int32)evt.type) {
 	default:
 		break;
 

engines/asylum/views/scene.cpp

@@ -293,7 +293,7 @@ void Scene::load(ResourcePackId packId) {
 // Event handling
 //////////////////////////////////////////////////////////////////////////
 bool Scene::handleEvent(const AsylumEvent &evt) {
-	switch ((uint32)evt.type) {
+	switch ((int32)evt.type) {
 	default:
 		break;
 

engines/asylum/views/video.cpp

@@ -55,7 +55,7 @@ VideoPlayer::~VideoPlayer() {
 // Event Handler
 //////////////////////////////////////////////////////////////////////////
 bool VideoPlayer::handleEvent(const AsylumEvent &evt) {
-	switch ((uint32)evt.type) {
+	switch ((int32)evt.type) {
 	default:
 		break;