eileenmcnaughton/CiviCRM-eWay-recurring-payment-processor — pull request #3 by kenwest (2014-11-16 13:11:17+00:00)
Title: Leave null subsciption url unchanged

Eileen, parent::subscriptionURL() can return NULL. This happens in the case of $action = 'billing'.

This PR prevents a 'cs=' query parameter being appended to a NULL URL. That will be included in the Contribution receipt and the donor will have a bad link in their receipt.