/*      shutdown()   */
static VALUE my_shutdown(int argc, VALUE* argv, VALUE obj)
{
    MYSQL* m = GetHandler(obj);
    VALUE level;

    rb_scan_args(argc, argv, "01", &level);
#if MYSQL_VERSION_ID >= 40103
    if (mysql_shutdown(m, NIL_P(level) ? SHUTDOWN_DEFAULT : NUM2INT(level)) != 0)
#else
    if (mysql_shutdown(m) != 0)
#endif
        mysql_raise(m);
    return obj;
}