SL-12168 FIXED crash on exit, if resetting camera was performed

indra/newview/llagentcamera.cpp

@@ -282,6 +282,11 @@ LLAgentCamera::~LLAgentCamera()
 //-----------------------------------------------------------------------------
 void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
 {
+	if (gDisconnected)
+	{
+		return;
+	}
+
 	if (gAgent.getAutoPilot())
 	{
 		gAgent.stopAutoPilot(TRUE);

indra/newview/llappviewer.cpp

@@ -1719,6 +1719,11 @@ bool LLAppViewer::cleanup()
 	disconnectViewer();
 
 	LL_INFOS() << "Viewer disconnected" << LL_ENDL;
+	
+	if (gKeyboard)
+	{
+		gKeyboard->resetKeys();
+	}
 
 	display_cleanup();
 

indra/newview/llviewerkeyboard.cpp

@@ -986,6 +986,11 @@ EKeyboardMode LLViewerKeyboard::getMode()
 // Called from scanKeyboard.
 void LLViewerKeyboard::scanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level)
 {
+	if (LLApp::isExiting())
+	{
+		return;
+	}
+
 	S32 mode = getMode();
 	// Consider keyboard scanning as NOT mouse event. JC
 	MASK mask = gKeyboard->currentMask(FALSE);