Fixes golang/go#10760 maybe, I have been unable to reproduce it. Change-Id: Iaeec631f5a6be29b312969df12f6bd6b95bc2aa1 Reviewed-on: https://go-review.googlesource.com/9880 Reviewed-by: Burcu Dogan <jbd@google.com> Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>