uxnemu: delay for 25ms if failed to push stdin event - queue is probably full

src/uxnemu.c

@@ -131,8 +131,10 @@ stdin_handler(void *p)
 	SDL_Event event;
 	USED(p);
 	event.type = stdin_event;
-	while(read(0, &event.cbutton.button, 1) > 0 && SDL_PushEvent(&event) >= 0)
+	while(read(0, &event.cbutton.button, 1) > 0){
-		;
+		while(SDL_PushEvent(&event) < 0)
+			SDL_Delay(25); /* slow down - the queue is most likely full */
+	}
 	return 0;
 }