Fix unused variable on win32 build

Fix unused variable on win32 build

BUG=chromium:703028
Review-Url: https://codereview.chromium.org/2759983002
Cr-Commit-Position: refs/heads/master@{#43947}
Committed: https://chromium.googlesource.com/v8/v8/+/3100f9b2553b079a796a42213d2cfa3af932ca08

[jgruber, 2017-03-20 15:53:46]

The CQ bit was checked by jgruber@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-20 15:53:49]

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

[jgruber, 2017-03-20 15:54:20]

jgruber@chromium.org changed reviewers:
+ cbruni@chromium.org

[Camillo Bruni, 2017-03-20 15:55:11]

lgtm

[jgruber, 2017-03-20 15:55:32]

The CQ bit was unchecked by jgruber@chromium.org

[jgruber, 2017-03-20 15:55:37]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2017-03-20 15:55:40]

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, 2017-03-20 16:44:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490025337848540, "parent_rev":
"1f617767f958b6a5f1b8b12f1e5da9888580da97", "commit_rev":
"3100f9b2553b079a796a42213d2cfa3af932ca08"}

[commit-bot: I haz the power, 2017-03-20 16:44:15]

Description was changed from

==========
Fix unused variable on win32 build

BUG=chromium:703028
==========

to

==========
Fix unused variable on win32 build

BUG=chromium:703028

Review-Url: https://codereview.chromium.org/2759983002
Cr-Commit-Position: refs/heads/master@{#43947}
Committed:
https://chromium.googlesource.com/v8/v8/+/3100f9b2553b079a796a42213d2cfa3af93...
==========

[commit-bot: I haz the power, 2017-03-20 16:44:16]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/3100f9b2553b079a796a42213d2cfa3af93...