Ticket #3642: walk_array_check.diff

wp-includes/classes.php

@@ -396 +396 @@
         function walk($elements, $to_depth) {
                 $args = array_slice(func_get_args(), 2); $parents = array(); $depth = 1; $previous_element = ''; $output = '';
 
+                if( !is_array($elements) )
+                        return false;
+
                 //padding at the end
                 $last_element->post_parent = 0;
                 $last_element->post_id = 0;