Ticket #10710: allow_empty_permalink_vars.10710.diff

wp-includes/classes.php

@@ -266 +266 @@
                                 $this->query_vars[$wpvar] = $_POST[$wpvar];
                         elseif (!empty($_GET[$wpvar]))
                                 $this->query_vars[$wpvar] = $_GET[$wpvar];
-                        elseif (!empty($perma_query_vars[$wpvar]))
+                        elseif (isset($perma_query_vars[$wpvar]))
                                 $this->query_vars[$wpvar] = $perma_query_vars[$wpvar];
 
                         if ( !empty( $this->query_vars[$wpvar] ) ) {