Worklist.py: return a tuple of matched portal type id if matched key is portal type.

product/ERP5Workflow/Document/Worklist.py

@@ -135,12 +135,7 @@ class Worklist(IdAsReferenceMixin("worklist_", "prefix"), XMLObject):
         matches = None
         matches_ref_list = []
         if id == 'portal_type':
-          v = ''.join(self.matched_portal_type)
-          if tales_re.match(v).group(1):
-            matches = Expression(v)
-          else:
-            v = [ var.strip() for var in self.matched_portal_type ]
-            matches = tuple(v)
+          matches = self.getMatchedPortalTypeList()
 
         if id in ['validation_state', 'simulation_state']:
           if id == 'validation_state':