Fix the "Crash on Exit" bug (cherry picked from commit b4f6ccaa88)

We were throwing away the Dispatcher before all the keys (namely, leaked
keys) were unloaded. See the comment in plResManager for more details.

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/inc/plgDispatch.h

@@ -68,6 +68,8 @@ public:
 	virtual void	MsgQueueOnOff(hsBool) = 0;		// Turn on or off Queued Messages, if off, uses MsgSend Immediately (for plugins)
 
 	virtual hsBool	SetMsgBuffering(hsBool on) = 0; // On starts deferring msg delivery until buffering is set to off again.
+
+	virtual bool	BeginShutdown() = 0;
 
 };
 
 class plgDispatch

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/pnDispatch/plDispatch.cpp

@@ -103,12 +103,14 @@ plDispatch::plDispatch()
 
 plDispatch::~plDispatch()
 {
-	int i;
-	for( i = 0; i < fRegisteredExactTypes.GetCount(); i++ )
-		delete fRegisteredExactTypes[i];
-
+	hsAssert(fRegisteredExactTypes.GetCount() == 0, "registered type after Dispatch shutdown");
 	ITrashUndelivered();
+}
 
+void plDispatch::BeginShutdown()
+{
+	fRegisteredExactTypes.Reset();
+	ITrashUndelivered();
 }
 
 void plDispatch::ITrashUndelivered()

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/NucleusLib/pnDispatch/plDispatch.h

@@ -131,6 +131,8 @@ public:
 
 	virtual hsBool	SetMsgBuffering(hsBool on); // On starts deferring msg delivery until buffering is set to off again.
 
+	virtual void	BeginShutdown();
+
 	static void SetMsgRecieveCallback(MsgRecieveCallback callback) { fMsgRecieveCallback = callback; }
 };
 
@@ -145,7 +147,7 @@ public:
 	virtual void UnRegisterForType(UInt16 hClass, const plKey& receiver) {}
 
 
-	virtual hsBool MsgSend(plMessage* msg) {}
+	virtual hsBool	MsgSend(plMessage* msg) {}
 	virtual void	MsgQueue(plMessage* msg){}
 	virtual void	MsgQueueProcess(){}
 

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plResMgr/plResManager.cpp

@@ -205,10 +205,12 @@ void plResManager::IShutdown()
 	// TimerCallbackMgr is a fixed-keyed object, so needs to shut down before the registry
 	plgTimerCallbackMgr::Shutdown(); 
 
-	// Destroy the dispatch. Note that we do this before the registry so that any lingering messages
-	// can free up keys properly
-	hsRefCnt_SafeUnRef(fDispatch);
-	fDispatch = nil;
+	// Formerly, we destroyed the Dispatcher here to clean up keys for leak reporting.
+	// However, if there are *real* leaked keys, then they will want to unload after this step.
+	// To unload, plKeyImp needs to dispatcher. SO, we're going to pitch everything currently in the
+	// Dispatcher and kill it later
+	fDispatch->BeginShutdown();
+
 
 	// Just before we shut down the registry, page out any keys that still exist.
 	// (They shouldn't... they're baaaaaad.)
@@ -224,9 +226,12 @@ void plResManager::IShutdown()
 	fLoadedPages.clear();
 
 	IUnlockPages();
-
 	fLastFoundPage = nil;
 
+	// Now, kill off the Dispatcher
+	hsRefCnt_SafeUnRef(fDispatch);
+	fDispatch = nil;
+
 	kResMgrLog(1, ILog(1, "   ...Shutdown successful!"));
 
 	fInited = false;