Fixes #26220

Change-Id: I05703912be594d985ad3ccb3a9757ae21ec738ab
GitHub-Last-Rev: e4649847e015e573ee169c7d6db29b9437841afd
GitHub-Pull-Request: golang/go#26293
Reviewed-on: https://go-review.googlesource.com/122715Reviewed-by: Ian Lance Taylor <iant@golang.org>