Remove pass-by-ref in PaypalProIPN::single

This is called from 2 places. Neither use the values again & neither receive any pass-by-reference values
themselves

diff --git a/CRM/Core/Payment/PayPalProIPN.php b/CRM/Core/Payment/PayPalProIPN.php
index e5c58d3de7ec8045dbb6e4187fd822b114853a43..024d845b427ae3b15db26653d2794f5baf253105 100644 (file)
--- a/CRM/Core/Payment/PayPalProIPN.php
+++ b/CRM/Core/Payment/PayPalProIPN.php
@@ -321,7 +321,7 @@ class CRM_Core_Payment_PayPalProIPN extends CRM_Core_Payment_BaseIPN {
    *
    * @return void
    */
-  public function single(&$input, &$ids, &$objects, $recur = FALSE, $first = FALSE) {
+  public function single($input, $ids, $objects, $recur = FALSE, $first = FALSE) {
     $contribution = &$objects['contribution'];
 
     // make sure the invoice is valid and matches what we have in the contribution record