InteractionWorkflow.py: change the way to get after script to not calling it.

product/ERP5Workflow/Document/InteractionWorkflow.py

@@ -133,6 +133,7 @@ class InteractionWorkflow(IdAsReferenceMixin("", "prefix"), Workflow):
     Allows the user to request information provided by the
     workflow.  This method must perform its own security checks.
     '''
+    vdef = getattr(self, name, _MARKER)
     for x in self.objectValues(portal_type='Variable'):
       if x.getReference() == name:
         vdef = x
@@ -339,7 +340,8 @@ class InteractionWorkflow(IdAsReferenceMixin("", "prefix"), Workflow):
       after_script_list.append(tdef.getAfterScriptName())
       if after_script_list != [] and tdef.getAfterScriptName() is not None:
         for script_name in after_script_list:
-          script = self ._getOb(script_name)
+          # try to get the script without calling it.
+          script = self.getScriptValueList()[script_name]
           # Pass lots of info to the script in a single parameter.
           script.execute(sci)  # May throw an exception