PHP 5.x E_NOTICE error (Undefined index)

Status Log: Notice: Undefined index: test in boost_crawler_run() (line 5722 of /var/www/virtual/peterbowey.com.au/sites/all/modules/boost/boost.module).

Fix [boost.module]:

  if ($_GET['q'] == 'boost-crawler') {
    // if not called via cron, require key to be present in url
    if ($_GET['key'] != variable_get('boost_crawler_key', FALSE)) {
      drupal_access_denied();
      exit;
    }
    // Test for access on status page
-     if ($_GET['test']) {
+    if (!empty($_GET['test'])) {
      echo '<h1>OK</h1>';
      exit;
    }