* fixed bug where fceux would eat cpu when not running rom (GTK+)

* minor SDL audio perfomance increase

src/drivers/sdl/sdl-sound.cpp

@@ -173,7 +173,7 @@ WriteSound(int32 *buf,
 		{
             while(s_BufferIn == s_BufferSize) 
 			{
-                SDL_Delay(1);
+                SDL_Delay(0);
             }
 
             s_Buffer[s_BufferWrite] = *buf;

src/drivers/sdl/sdl.cpp

@@ -761,6 +761,8 @@ SDL_GL_LoadLibrary(0);
 	#endif
         DoFun(frameskip);
         #ifdef _GTK2
+        else
+			SDL_Delay(10);
         while(gtk_events_pending())
 			gtk_main_iteration_do(FALSE);
         #endif