"Call-time pass-by-reference has been deprecated" warning

The function menu_item_container_form_menu_edit_item_alter() calls _menu_item_container_form_menu_edit_item_alter() and passes the parameters by ref. The function should look like

function menu_item_container_form_menu_edit_item_alter(&$form, &$form_state) {
  module_load_include('inc', 'menu_item_container', 'menu_item_container.admin');
  _menu_item_container_form_menu_edit_item_alter($form, $form_state);
}

Thanks for the great utility module!