fix NameError

Strangely, this name error in setUp hangs runUnitTest ...


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16383 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/tests/testAccounting.py

@@ -170,7 +170,7 @@ class AccountingTestCase(ERP5TypeTestCase):
         doc.validate()
 
     # and the preference enabled
-    preference = self.portal.portal_preferences.accounting_zuite_preference
+    pref = self.portal.portal_preferences.accounting_zuite_preference
     pref.manage_addLocalRoles(self.username, ('Auditor', ))
     # Make sure _aq_dynamic is called before calling the workflow method
     # otherwise .enable might not been wrapped yet. This happen in --load