Add extra size check to avoid unwanted Seg Fault

Add extra size check to avoid unwanted Seg Fault

BUG=

Review-Url: https://codereview.chromium.org/2854973004
Cr-Commit-Position: refs/heads/master@{#469187}
Committed: https://chromium.googlesource.com/chromium/src/+/5a2d8707dff6a410c0511c423ed837651559ce92

[dvallet, 2017-05-03 08:03:40]

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

[commit-bot: I haz the power, 2017-05-03 08:03:56]

Dry run: CQ is trying da patch.

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

[dvallet, 2017-05-03 08:04:26]

dvallet@chromium.org changed reviewers:
+ alexclarke@chromium.org, skyostil@chromium.org

[dvallet, 2017-05-03 08:04:26]

PTAL

[alex clarke (OOO till 29th), 2017-05-03 08:10:26]

lgtm

[commit-bot: I haz the power, 2017-05-03 08:33:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-03 08:33:02]

Dry run: This issue passed the CQ dry run.

[dvallet, 2017-05-03 23:03:05]

The CQ bit was checked by dvallet@chromium.org

[commit-bot: I haz the power, 2017-05-03 23:03:38]

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, 2017-05-03 23:10:05]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493852585394820, "parent_rev":
"3d7778bec90aef27109d62a3455fd004fd1d7592", "commit_rev":
"5a2d8707dff6a410c0511c423ed837651559ce92"}

[commit-bot: I haz the power, 2017-05-03 23:10:16]

Description was changed from

==========
Add extra size check to avoid unwanted Seg Fault

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

to

==========
Add extra size check to avoid unwanted Seg Fault

BUG=

Review-Url: https://codereview.chromium.org/2854973004
Cr-Commit-Position: refs/heads/master@{#469187}
Committed:
https://chromium.googlesource.com/chromium/src/+/5a2d8707dff6a410c0511c423ed8...
==========

[commit-bot: I haz the power, 2017-05-03 23:10:17]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/5a2d8707dff6a410c0511c423ed8...