fix messageHandler null deconstruction

src/index.js

@@ -11,7 +11,7 @@ const init = ({ app, server, options }) => {
   const realm = new Realm();
   const messageHandler = require('./messageHandler')({ realm });
   const api = require('./api')({ config, realm, messageHandler });
-  const { startMessagesExpiration } = require('./services/messagesExpire')({ realm, config });
+  const { startMessagesExpiration } = require('./services/messagesExpire')({ realm, config, messageHandler });
 
   app.use(options.path, api);
 

src/services/messagesExpire/index.js

@@ -1,7 +1,6 @@
-const messageHandler = require('../../messageHandler');
 const { MessageType } = require('../../enums');
 
-module.exports = ({ realm, config }) => {
+module.exports = ({ realm, config, messageHandler }) => {
   const pruneOutstanding = () => {
     const destinationClientsIds = realm._messageQueues.keys();