Fixes #30507

Change-Id: Ic598e4d5f71c624fcde051982bf85533e2f18e8d
Reviewed-on: https://go-review.googlesource.com/c/go/+/170948Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>