macosx: Fix addNode:.

modules/gui/macosx/playlist.m

@@ -1350,24 +1350,24 @@
 
     int ret_v;
     char *psz_name = NULL;
-    playlist_item_t * p_item;
     ret_v = intf_UserStringInput( p_playlist, _("New Node"),
         _("Please enter a name for the new node."), &psz_name );
 
+    PL_LOCK;
     if( ret_v != DIALOG_CANCELLED && psz_name && *psz_name )
-        p_item = playlist_NodeCreate( p_playlist, psz_name,
+    {
+        playlist_NodeCreate( p_playlist, psz_name,
                                       p_playlist->p_local_category, 0, NULL );
+    }
     else if(! config_GetInt( p_playlist, "interact" ) )
     {
         /* in case that the interaction is disabled, just give it a bogus name */
-        p_item = playlist_NodeCreate( p_playlist, _("Empty Folder"),
+        playlist_NodeCreate( p_playlist, _("Empty Folder"),
                                       p_playlist->p_local_category, 0, NULL );
     }
+    PL_UNLOCK;
 
-    if(! p_item )
-        msg_Warn( VLCIntf, "node creation failed or cancelled by user" );
-
-    vlc_object_release( p_playlist );
+    pl_Release( VLCIntf );
     [ourPool release];
 }