Ticket #4834: link-template.patch

wp-includes/link-template.php

@@ -60 +60 @@
         );
 
         $post = &get_post($id);
+
+        if ( empty($post->ID) ) return FALSE;
+
         if ( $post->post_type == 'page' )
                 return get_page_link($post->ID);
         elseif ($post->post_type == 'attachment')