Fix potential use after free in H264 packetizer.

Fix potential use after free in H264 packetizer.

BUG=webrtc:7116
Review-Url: https://codereview.webrtc.org/2677073002
Cr-Commit-Position: refs/heads/master@{#16442}
Committed: https://chromium.googlesource.com/external/webrtc/+/237e1bbf76a412b3e75fbe36ecd792fb8dbc51b6

[sprang_webrtc, 2017-02-06 09:38:11]

The CQ bit was checked by sprang@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2017-02-06 09:38:18]

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

[sprang_webrtc, 2017-02-06 09:38:25]

sprang@webrtc.org changed reviewers:
+ stefan@webrtc.org

[stefan-webrtc, 2017-02-06 09:41:26]

lgtm

[commit-bot: I haz the power, 2017-02-06 10:41:20]

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

[commit-bot: I haz the power, 2017-02-06 10:41:21]

Dry run: This issue passed the CQ dry run.

[sprang_webrtc, 2017-02-06 10:59:56]

The CQ bit was checked by sprang@webrtc.org

[commit-bot: I haz the power, 2017-02-06 11:00:01]

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

[commit-bot: I haz the power, 2017-02-06 11:02:16]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486378796448580, "parent_rev":
"60f7c633f93bd7940c8eb4bd7b62e35b2972909b", "commit_rev":
"237e1bbf76a412b3e75fbe36ecd792fb8dbc51b6"}

[commit-bot: I haz the power, 2017-02-06 11:02:18]

Description was changed from

==========
Fix potential use after free in H264 packetizer.

BUG=webrtc:7116
==========

to

==========
Fix potential use after free in H264 packetizer.

BUG=webrtc:7116

Review-Url: https://codereview.webrtc.org/2677073002
Cr-Commit-Position: refs/heads/master@{#16442}
Committed:
https://chromium.googlesource.com/external/webrtc/+/237e1bbf76a412b3e75fbe36e...
==========

[commit-bot: I haz the power, 2017-02-06 11:02:19]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/237e1bbf76a412b3e75fbe36e...