Fix session patch

patch

diff --git a/app/code/core/Mage/Core/Model/Session/Abstract.php b/app/code/core/Mage/Core/Model/Session/Abstract.php
index 8386fb8..a287df6 100644
--- a/app/code/core/Mage/Core/Model/Session/Abstract.php
+++ b/app/code/core/Mage/Core/Model/Session/Abstract.php
@@ -564,6 +564,8 @@ class Mage_Core_Model_Session_Abstract extends Mage_Core_Model_Session_Abstract_
      */
     public function renewSession()
     {
+        return $this;
+
         $this->getCookie()->delete($this->getSessionName());
         $this->regenerateSessionId();