In https://go-review.googlesource.com/#/c/8611/ , these tests were
supposed to be skipped only for linux and darwin, as the comment says.
This patch fixes the logic in the if test.
Change-Id: Iff0a32186267457a414912c4c3ee4495650891a2
Reviewed-on: https://go-review.googlesource.com/12517 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>