Fixes #31841

Change-Id: I3f068686154fd2fa5755b0df47b4eaa5c9a19107
Reviewed-on: https://go-review.googlesource.com/c/go/+/175260Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>