pagespeed/ngx_pagespeed — pull request #655 by oschaaf (2014-04-06 07:19:32+00:00)
Title: native-fetcher: fix CHECK failure on DNS timeout

Make sure we clear the timeout event associated with resolving
a hostname in `CallbackDone()`, which would otherwise end up
calling `CallbackDone()` a second time upon firing.

Fixes https://github.com/pagespeed/ngx_pagespeed/issues/625