Fixes #25827

Change-Id: I6736c3ac061ca32aac2eb68b01ba53a179d68cf4
Reviewed-on: https://go-review.googlesource.com/118076
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>