#56415, menu_set_location (menu_set_active) mangles $_GET/arg(), patch by JonBob

includes/menu.inc

@@ -328,6 +328,10 @@ function menu_set_location($location) {
   $temp_id = min(array_keys($_menu['items'])) - 1;
   $prev_id = 0;
 
+  // Don't allow this function to change the actual current path, just the
+  // position in the menu tree.
+  $location[count($location) - 1]['path'] = $_GET['q'];
+
   foreach (array_reverse($location) as $item) {
     if (isset($_menu['path index'][$item['path']])) {
       $mid = $_menu['path index'][$item['path']];