MacOSX/Framework/VLCMediaList.m: Don't lock in initMediaListInternal, we risk double lock.

Sources/VLCMediaList.m

@@ -251,14 +251,12 @@ static void HandleMediaListItemDeleted( const libvlc_event_t * event, void * use
 - (void)initInternalMediaList
 {
     // Add event callbacks
-    [self lock];
     libvlc_exception_t p_e;
     libvlc_exception_init(&p_e);
 
     libvlc_event_manager_t *p_em = libvlc_media_list_event_manager( p_mlist, &p_e );
     libvlc_event_attach( p_em, libvlc_MediaListItemAdded,   HandleMediaListItemAdded,   self, &p_e );
     libvlc_event_attach( p_em, libvlc_MediaListItemDeleted, HandleMediaListItemDeleted, self, &p_e );
-    [self unlock];
     
     quit_on_exception( &p_e );
 }