Fixes #29879

Change-Id: Id2061a5eab67bb90a8116dc4f16073be1c9a09a9
GitHub-Last-Rev: 186863ab6aa9481744f276a7afbd87bd53c9f863
GitHub-Pull-Request: golang/go#29900
Reviewed-on: https://go-review.googlesource.com/c/go/+/159178Reviewed-by: Philipp Stephani <phst@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>