DrupalSessionFix.patch

diff --git a/CRM/Core/Payment/OmnipayMultiProcessor.php b/CRM/Core/Payment/OmnipayMultiProcessor.php
index 207f1a8..7f6ccb6 100644
--- a/CRM/Core/Payment/OmnipayMultiProcessor.php
+++ b/CRM/Core/Payment/OmnipayMultiProcessor.php
@@ -164,6 +164,12 @@ class CRM_Core_Payment_OmnipayMultiProcessor extends CRM_Core_Payment_PaymentExt
         // Serialization of 'Closure' is not allowed error - issue #17
         $this->gateway = NULL;
         CRM_Core_Session::storeSessionObjects(FALSE);
+
+        //Commit the session if it is not already done.
+        $config = CRM_Core_Config::singleton();
+        if ($config->userSystem->is_drupal && function_exists('drupal_session_commit')) {
+          drupal_session_commit();
+        }
         if ($response->isTransparentRedirect()) {
           $this->storeTransparentRedirectFormData($params['qfKey'], $response->getRedirectData() + array(
             'payment_processor_id' => $this->_paymentProcessor['id'],