visionmedia/superagent — pull request #473 by tgohn (2014-10-18 20:36:37+00:00)
Title: Fix: 'end' cb was called twice if cb has runtime error

- Stop try-catch passed-in callback function (client.js)
- fix failing test of 'header parsing' for browser test.

https://github.com/visionmedia/superagent/issues/450