Merge pull request #3230 from jbrazio/bugfix/ultra-lcd-warning

Fix a compiler warning in ultralcd.cpp

Marlin/ultralcd.cpp

     enqueue_and_echo_command_now(cmd);
   }
 
-#endif PIDTEMP || PIDTEMPBED
+#endif //PIDTEMP || PIDTEMPBED
 
 #if ENABLED(PIDTEMP)