Fix the use of commands list, tree and vars in the rc interface which were broken since [21138].

src/misc/objects.c

@@ -192,7 +192,10 @@ vlc_object_t *vlc_custom_create( vlc_object_t *p_this, size_t i_size,
     if( i_type == VLC_OBJECT_GLOBAL )
     {
         vlc_mutex_init( p_new, &structure_lock );
+    }
 
+    if( i_type == VLC_OBJECT_LIBVLC )
+    {
         var_Create( p_new, "list", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
         var_AddCallback( p_new, "list", DumpCommand, NULL );
         var_Create( p_new, "tree", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );