ether/etherpad-lite — pull request #1431 by mluto (2013-01-30 14:22:51+00:00)
Title: Fix USERINFO_UPDATE crash

Fixes https://github.com/ether/etherpad-lite/issues/1429
Server no longer crashes when a client sends a empty `USERINFO_UPDATE`-message.
```javascript
var message = {};
message.type = 'USERINFO_UPDATE';
pad.collabClient.sendMessage(message);
```