media.vlc.status should synchronize on _stop_lock, or it may fail in the middle of its execution if the VLC session is being freed

platypush/plugins/media/vlc.py

@@ -403,6 +403,8 @@ class MediaVlcPlugin(MediaPlugin):
             }
         """
         import vlc
+
+        with self._stop_lock:
             if not self._player:
                 return {'state': PlayerState.STOP.value}