FreeBSD: Fix semaphore alignment

FreeBSD: Fix semaphore alignment

On FreeBSD, sem_t is a struct with a couple of uint32_t fields. It only
needs dword alignment on 64 bits architectures, not the qword (pointer)
alignment that the CHECK currently enforces.

BUG=

Committed: https://crrev.com/6993943e10adc68401ed3b1014464f913cc66237
Cr-Commit-Position: refs/heads/master@{#38829}

[targos, 2016-08-23 07:50:36]

mic.besace@gmail.com changed reviewers:
+ ben@strongloop.com, jochen@chromium.org

[jochen (gone - plz use gerrit), 2016-08-23 12:45:00]

lgtm

[targos, 2016-08-23 14:01:21]

The CQ bit was checked by mic.besace@gmail.com

[commit-bot: I haz the power, 2016-08-23 14:01:34]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-23 14:23:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-23 14:24:06]

Description was changed from

==========
FreeBSD: Fix semaphore alignment

On FreeBSD, sem_t is a struct with a couple of uint32_t fields. It only
needs dword alignment on 64 bits architectures, not the qword (pointer)
alignment that the CHECK currently enforces.

BUG=
==========

to

==========
FreeBSD: Fix semaphore alignment

On FreeBSD, sem_t is a struct with a couple of uint32_t fields. It only
needs dword alignment on 64 bits architectures, not the qword (pointer)
alignment that the CHECK currently enforces.

BUG=

Committed: https://crrev.com/6993943e10adc68401ed3b1014464f913cc66237
Cr-Commit-Position: refs/heads/master@{#38829}
==========

[commit-bot: I haz the power, 2016-08-23 14:24:07]

Patchset 1 (id:??) landed as
https://crrev.com/6993943e10adc68401ed3b1014464f913cc66237
Cr-Commit-Position: refs/heads/master@{#38829}