Fixup EClassManager to not clear out entityDefs in unrealise(), since…

… we might be reloading the defs.

Clear the EClassManager members in the shutdownModule() method instead.

plugins/eclassmgr/EClassManager.cpp

@@ -242,8 +242,6 @@ void EClassManager::unrealise()
 	{
         // This waits for any threaded work to finish
         _defLoader.reset();
-
-       	_entityClasses.clear();
        	_realised = false;
     }
 }
@@ -317,8 +315,18 @@ void EClassManager::initialiseModule(const ApplicationContext& ctx)
 void EClassManager::shutdownModule()
 {
 	rMessage() << "EntityClassDoom3::shutdownModule called." << std::endl;
-	unrealise();
+
 	GlobalFileSystem().removeObserver(*this);
+
+	// Unrealise ourselves and wait for threads to finish
+	unrealise();
+
+	// Don't notify anyone anymore
+	_defsReloadedSignal.clear();
+
+	// Clear member structures
+	_entityClasses.clear();
+	_models.clear();
 }
 
 // This takes care of relading the entityDefs and refreshing the scenegraph

plugins/shaders/Doom3ShaderSystem.cpp

@@ -143,11 +143,13 @@ void Doom3ShaderSystem::ensureDefsLoaded()
     }
 }
 
-void Doom3ShaderSystem::onFileSystemInitialise() {
+void Doom3ShaderSystem::onFileSystemInitialise()
+{
 	realise();
 }
 
-void Doom3ShaderSystem::onFileSystemShutdown() {
+void Doom3ShaderSystem::onFileSystemShutdown()
+{
 	unrealise();
 }