fix 304 codes

pub1c-rest.py

@@ -314,7 +314,7 @@ class EnterpriseModule(Resource):
     def put(self):
         webpub = get_webpub1c()
         if webpub.has_module():
-            abort(304, message='already added')
+            return '', 304
         webpub.add_module()
         return {
             'message': 'success'
@@ -335,7 +335,7 @@ class ApacheRestartFlag(Resource):
         cfg = get_config()
         flagfile = cfg.get('apache_restart_flagfile', apache_restart_flagfile)
         if os.path.isfile(flagfile):
-            abort(304, message='found')
+            return '', 304
         with open(flagfile, 'a'):
             pass
         return {