X11: Fix use-of-uninitialized-variable

X11: Fix use-of-uninitialized-variable

Some failure paths in XGetVisualInfo don't set |nitems_return| to 0,
and instead just return nullptr directly.  This CL initializes that
variable to 0 manually to handle those cases.

BUG=725884
R=derat@chromium.org

Review-Url: https://codereview.chromium.org/2910753002
Cr-Commit-Position: refs/heads/master@{#475159}
Committed: https://chromium.googlesource.com/chromium/src/+/6a5692489564312b0ef27ad53e81289f8d3092d6

[Tom Anderson, 2017-05-26 20:50:47]

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

[commit-bot: I haz the power, 2017-05-26 20:51:31]

Dry run: 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, 2017-05-26 22:03:30]

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

[commit-bot: I haz the power, 2017-05-26 22:03:30]

Dry run: This issue passed the CQ dry run.

[Daniel Erat, 2017-05-26 22:07:34]

lgtm

[Tom Anderson, 2017-05-26 22:09:25]

The CQ bit was checked by thomasanderson@chromium.org

[commit-bot: I haz the power, 2017-05-26 22:10:02]

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, 2017-05-26 22:16:24]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495836565628820, "parent_rev":
"3412c3c60b69798430b3a3cc9d2834f5d44e6042", "commit_rev":
"6a5692489564312b0ef27ad53e81289f8d3092d6"}

[commit-bot: I haz the power, 2017-05-26 22:16:36]

Description was changed from

==========
X11: Fix use-of-uninitialized-variable

Some failure paths in XGetVisualInfo don't set |nitems_return| to 0,
and instead just return nullptr directly.  This CL initializes that
variable to 0 manually to handle those cases.

BUG=725884
R=derat@chromium.org
==========

to

==========
X11: Fix use-of-uninitialized-variable

Some failure paths in XGetVisualInfo don't set |nitems_return| to 0,
and instead just return nullptr directly.  This CL initializes that
variable to 0 manually to handle those cases.

BUG=725884
R=derat@chromium.org

Review-Url: https://codereview.chromium.org/2910753002
Cr-Commit-Position: refs/heads/master@{#475159}
Committed:
https://chromium.googlesource.com/chromium/src/+/6a5692489564312b0ef27ad53e81...
==========

[commit-bot: I haz the power, 2017-05-26 22:16:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6a5692489564312b0ef27ad53e81...