Incorrect watchdog parameters

I get the following errors when viewing log entries that have a comment_notify log entry in them:

    * warning: Invalid argument supplied for foreach() in /home/.katona/davereid20/drupal-6/includes/common.inc on line 789.
    * warning: strtr() [function.strtr]: The second argument is not an array in /home/.katona/davereid20/drupal-6/includes/common.inc on line 806.

The offending line of code:

watchdog('comment_notify', $watchdog_message,
        WATCHDOG_NOTICE, l(t('source comment'), 'node/'. $nid, array('fragment' => 'comment-'. $alert->cid)));

Should be in the form of watchdog($type, $message, $variables = array(), $severity = WATCHDOG_NOTICE, $link = NULL) (D6 watchdog)

watchdog('comment_notify', $watchdog_message, array(), WATCHDOG_NOTICE, l(t('source comment'), 'node/'. $nid, array('fragment' => 'comment-'. $alert->cid)));