[PATCH] osutil: fix potential wrong fd close

[Yuya Nishihara]

On Wed, 15 Mar 2017 20:56:56 -0700, Jun Wu wrote:
> # HG changeset patch
> # User Jun Wu <quark at fb.com>
> # Date 1489635792 25200
> #      Wed Mar 15 20:43:12 2017 -0700
> # Node ID ebcce969e076146ae9aa3690c35373123f5f508d
> # Parent  fb1b5cd17664218f73ed6ba604973b817932593e
> # Available At https://bitbucket.org/quark-zju/hg-draft
> #              hg pull https://bitbucket.org/quark-zju/hg-draft -r ebcce969e076
> osutil: fix potential wrong fd close

Looks good, queued, thanks.