Module broken by drupal core update (mysql_num_rows)
You should use db_affected_rows() function of the Drupal instead of mysql_num_rows() function of mysql to check number of rows result from query.

Your code should be:

$result  = db_query("SELECT nid FROM {httprequest}");
    if (db_affected_rows()) {
    //your code
    }


Instead of

$result  = db_query("SELECT nid FROM {httprequest}");
if (mysql_num_rows($result)) {
//your code
}