playlist: fix error in [874efde6]

src/playlist/engine.c

@@ -384,7 +384,7 @@ static void VariablesInit( playlist_t *p_playlist )
     var_SetBool( p_playlist, "intf-change", true );
 
     var_Create( p_playlist, "item-change", VLC_VAR_ADDRESS );
-    var_Create( p_playlist, "leaf-to-parent", VLC_VAR_ADDRESS );
+    var_Create( p_playlist, "leaf-to-parent", VLC_VAR_INTEGER );
 
     var_Create( p_playlist, "playlist-item-deleted", VLC_VAR_INTEGER );
     var_SetInteger( p_playlist, "playlist-item-deleted", -1 );

src/playlist/item.c

@@ -126,7 +126,7 @@ static void input_item_add_subitem_tree ( const vlc_event_t * p_event,
                                                  pos,
                                                  b_flat );
 
-    if( !b_flat ) var_SetAddress( p_playlist, "leaf-to-parent", p_item->i_id );
+    if( !b_flat ) var_SetInteger( p_playlist, "leaf-to-parent", p_item->i_id );
 
     //control playback only if it was the current playing item that got subitems
     if( b_current )