Submenu cannot be restricted in Backen Menu

Version 6.7.2
There is a JS bug in #admin-menu click event listener.
It always sends 0 to the server. Which prevents submenus to be restricted.
Please check and update:

$('input[type="checkbox"]', '#admin-menu').each(function () {
                        $(this).bind('click', function () {
                            var _this = $(this);
                            save(
                                [_this.data('menu-id')],
                                <strong>_this.attr('checked') ? 1 : 0</strong>,