hal_json_style/Base_redirect: pass an URL to Redirect

Even if this is not used because we have locked a status earlier, the
constructor expects an URL with zExceptions 4

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/Base_redirect.py

@@ -88,5 +88,5 @@ if (form_id not in [None, 'Base_viewFakePythonScriptActionForm', 'Base_viewFakeJ
 result = json.dumps(result_dict, indent=2)
 if abort_transaction:
   response.setBody(result, lock=True)
-  raise Redirect
+  raise Redirect('')
 return result