cases: fix icu breakage wasn’t caught as it requires a build tag to compile. Change-Id: I760a02e85cd512e8f089382ebcb87b0d94d0bd07 Reviewed-on: https://go-review.googlesource.com/29182 Run-TryBot: Marcel van Lohuizen <mpvl@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>