Ticket #15963: avoid-notice-on-orphaned-pages.15963.diff

wp-includes/post.php

@@ -3257 +3257 @@
                 $page = get_page($page);
         $uri = $page->post_name;
 
-        // A page cannot be it's own parent.
+        // A page cannot be its own parent.
         if ( $page->post_parent == $page->ID )
                 return $uri;
 
-        while ($page->post_parent != 0) {
-                $page = get_page($page->post_parent);
+        while (
+                $page->post_parent != 0 &&
+                ( $page = get_page( $page->post_parent ) )
+        ) {
                 $uri = $page->post_name . "/" . $uri;
         }
 
@@ -5229 +5231 @@
 }
 add_filter( 'wp_get_object_terms', '_post_format_wp_get_object_terms' );
 
-?>
- No newline at end of file
+?>