Don't leak file descriptor

Follow up to
https://chromium-review.googlesource.com/c/chromium/src/+/1572098

TBR=piman@chromium.org

Bug: 935980
Change-Id: I63a24b963390209a60fda2fbf5c8d897473f1c61
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1572657
Reviewed-by: Jonathan Backer <backer@chromium.org>
Commit-Queue: Jonathan Backer <backer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652146}
1 file changed