Auto merge of #4781 - alexcrichton:beta-next, r=alexcrichton
authorbors <bors@rust-lang.org>
Tue, 5 Dec 2017 17:05:29 +0000 (17:05 +0000)
committerbors <bors@rust-lang.org>
Tue, 5 Dec 2017 17:05:29 +0000 (17:05 +0000)
[beta] Reconfigure curl handles after reset

This is a backport of https://github.com/rust-lang/cargo/pull/4780


Trivial merge