Invoke make_response() with the right args

gitlab_docker_autodep/server.py

@@ -125,9 +125,8 @@ def app_webhook():
     ev_type = request.headers.get('X-Gitlab-Event')
     if ev_type != 'Pipeline Hook':
         app.logger.info('ignored non-pipeline event with type %s' % ev_type)
-        return make_response(200, ['{}'])
-
+    else:
         # Send request to worker threads for processing.
         queue.put(request.json)
 
-    return make_response(200, ['{}'])
+    return make_response('{}')