roccat: fix the neverending story^Wtimeout

If we don't change count, the value of count < MAX_RETRY is always true.

Coverity is a champ, isn't it?

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

src/driver-roccat.c

@@ -303,6 +303,7 @@ roccat_wait_ready(struct ratbag_device *device)
 			return 2;
 
 		msleep(10);
+		count++;
 	}
 
 	return -ETIMEDOUT;