Do not create new cookiejar object when old one can just be cleared.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@25429 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Wizard/Tool/WizardTool.py

@@ -318,7 +318,7 @@ class WizardTool(BaseTool):
         user_and_password[0] and user_and_password[1]):
       if user_and_password!=last_loggedin_user_and_password:
         # credentials changed we need to renew __ac cookie from server as well
-	cookiejar = cookielib.CookieJar() 
+	cookiejar.clear() 
       # try login to server only once using cookie method
       if not _isUserAcknowledged(cookiejar):
         server_url = self.getServerUrl()