GitLab

On Big Sur, guarded_close_np() has started sometimes returning
EPROTOTYPE or ENOTCONN errors. Try calling shutdown() before close as
a speculative workaround.

BUG=1151048

Change-Id: I99e4a58f1468027402099fd5b0220872f14b1578
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2561079Reviewed-by: David Schinazi <dschinazi@chromium.org>
Commit-Queue: Adam Rice <ricea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833429}