when fixing, don't set the property again if the cast failed.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9115 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Constraint/PropertyTypeValidity.py

@@ -85,11 +85,12 @@ class PropertyTypeValidity(Constraint):
             (property_id, property_type, str(type(value)))
         if fixit:
           # try to cast to correct type
-          if wrong_type :
-            try :
+          if wrong_type:
+            try:
               value = self._type_dict[property_type][0](value)
             except (KeyError, ValueError), error:
               error_message += " (Type cast failed : %s)" % error
+            else:
               object.setProperty(property_id, value)
               error_message += " (Fixed)"
         errors.append(self._generateError(object, error_message))