Ticket #34446: 34446.diff

src/wp-includes/class-wp-walker.php

@@ -215 +215 @@
                 $top_level_elements = array();
                 $children_elements  = array();
                 foreach ( $elements as $e) {
-                        if ( 0 == $e->$parent_field )
+                        if ( empty( $e->$parent_field ) )
                                 $top_level_elements[] = $e;
                         else
                                 $children_elements[ $e->$parent_field ][] = $e;