Zend_Soap: [ZF-9780] fix for r22860 update.

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@22898 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Soap/AutoDiscover.php

@@ -327,7 +327,7 @@ class Zend_Soap_AutoDiscover implements Zend_Server_Interface
         }
         $this->_wsdl = $wsdl;
 
-        return this;
+        return $this;
     }
 
     /**