Index: wp-includes/nav-menu-template.php
===================================================================
--- wp-includes/nav-menu-template.php	(revision 21015)
+++ wp-includes/nav-menu-template.php	(working copy)
@@ -65,7 +65,6 @@
 	 * @param object $args
 	 */
 	function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
-		global $wp_query;
 		$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
 
 		$class_names = $value = '';