erp5_corporate_identity: return empty list

'NoneType' object is not iterable

bt5/erp5_corporate_identity/SkinTemplateItem/portal_skins/erp5_corporate_identity/Preference_getDefaultOrganisationBankAccountList.py

@@ -17,5 +17,5 @@ if organisation_relative_url:
     organisation = context.restrictedTraverse(organisation_relative_url)
     return [('', '')] + [(account.getTitle(), account.getRelativeUrl()) for account in organisation.searchFolder(portal_type='Bank Account', sort_on='title')]
   except Unauthorized:
-    return None
-return None
+    return [('', '')]
+return [('', '')]