...and add the vet failures to the vet whitelist.

Change-Id: Idcf4289f39dda561c85f3b0afe396e5299e6495f
Reviewed-on: https://go-review.googlesource.com/127995
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>