erp5_officejs_support_request_ui: avoid warning: anonymous function does not always return a value

bt5/erp5_officejs_support_request_ui/SkinTemplateItem/portal_skins/erp5_officejs_support_request/gadget_generate_rss_link.js.js

@@ -44,4 +44,5 @@
           });
         });
     }, false, false);
-}(rJS, window, navigator));
\ No newline at end of file
+
+})(rJS, window, navigator);
\ No newline at end of file