Fixes https://github.com/golang/go/issues/23569 Change-Id: I0f3ffab74acd2b69da0bbec2e0e90e42c2618071 GitHub-Last-Rev: e66a888d643dacc290ef58649dcc248d1925219e GitHub-Pull-Request: golang/crypto#35 Reviewed-on: https://go-review.googlesource.com/98756 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>