miyagawa/hubot-cron — pull request #21 by camelmasa (2014-12-09 07:21:23+00:00)
Title: Fix TypeError when configured timezone

Hubot occurred following error when enable timezone.

```
2014-12-09T06:15:00.203359+00:00 app[web.1]: [Tue Dec 09 2014 06:15:00 GMT+0000 (UTC)] ERROR TypeError: Cannot call method 'send' of undefined
2014-12-09T06:15:00.203365+00:00 app[web.1]: at Job.sendMessage (/app/node_modules/hubot-cron/src/scripts/cron.coffee:127:5, :177:20)
2014-12-09T06:15:00.203367+00:00 app[web.1]: at Object. (/app/node_modules/hubot-cron/src/scripts/cron.coffee:115:7, :158:22)
2014-12-09T06:15:00.203369+00:00 app[web.1]: at Object.CronJob._callback (/app/node_modules/hubot-cron/node_modules/cron/lib/cron.js:339:26)
2014-12-09T06:15:00.203371+00:00 app[web.1]: at [object Object].callbackWrapper [as _onTimeout] (/app/node_modules/hubot-cron/node_modules/cron/lib/cron.js:401:14)
2014-12-09T06:15:00.203373+00:00 app[web.1]: at Timer.listOnTimeout [as ontimeout] (timers.js:112:15)
```

So, we added `robot` to [the line](https://github.com/miyagawa/hubot-cron/blob/master/src/scripts/cron.coffee#L55).