dx9 savestate crash fix

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5380 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoDX9/Src/main.cpp

@@ -294,7 +294,9 @@ void Shutdown()
 
 void DoState(unsigned char **ptr, int mode) {
 	// Clear texture cache because it might have written to RAM
+	CommandProcessor::FifoCriticalEnter();
 	TextureCache::Invalidate(false);
+	CommandProcessor::FifoCriticalLeave();
 	// No need to clear shader caches.
 	PointerWrap p(ptr, mode);
 	VideoCommon_DoState(p);