call 'updateLocalRolesOnDocument()' only if any role exists on the document.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@29644 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/ERP5Type.py

@@ -392,7 +392,12 @@ class ERP5TypeInformation(XMLObject,
           # workflow and it is annoyning without security setted
           ob.portal_type = self.getId()
 
-        self.updateLocalRolesOnDocument(ob)
+        # Here we don't use "if len(self.getFilteredRoleListFor(ob))"
+        # but use "for role in self.getFilteredRoleListFor(ob)" because
+        # getFilteredRoleListFor returns a generator.
+        for role in self.getFilteredRoleListFor(ob):
+          self.updateLocalRolesOnDocument(ob)
+          break
 
         # notify workflow after generating local roles, in order to prevent
         # Unauthorized error on transition's condition