playlist: Correctly decref where we use the object.

src/playlist/engine.c

@@ -398,8 +398,6 @@ check_input:
 
 static void ML_Decref( playlist_item_t *p_node )
 {
-    vlc_gc_decref( p_node->p_input );
-
     int i;
     if( p_node->i_children > 0 )
         for( i = 0 ; i < p_node->i_children ; i++ )

src/playlist/loadsave.c

@@ -180,6 +180,7 @@ int playlist_MLLoad( playlist_t *p_playlist )
     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
                         input_item_subitem_added, p_playlist );
 
+    vlc_gc_decref( p_input );
     free( psz_uri );
     return VLC_SUCCESS;