Revert "Remove useless return."

This reverts commit 24e807f520.

console/librsound/librsound.c

@@ -685,6 +685,9 @@ static int rsnd_poll(struct pollfd *fd, int numfd, int timeout)
       }
       return 0;
    }
+
+   // Avoids warning
+   return 0;
 }
 
 static void rsnd_sleep(int msecs)