mikitsu

I can confirm this happens when the whitelist file is empty (because the allowed key set is empty, [these lines](https://github.com/shazow/ssh-chat/pull/395/files#diff-1f48700829d7e0cdba7f3729d6a7c1c5df3aa11f2aeeed583c7e1e39aa7b66d1L66)). However, I can't reproduce this with ``` $ cat user_key.pub...

Is this related to #39 ?