ash: Fix memory leak in DisplayColorManager on error path

ash: Fix memory leak in DisplayColorManager on error path

The error path for dealing with missing VCGT data was failing to free
the loaded profile. Unfortunately due to https://crbug.com/549239 this
error is occuring in the wild. The new unit tests at
https://crrev.com/1430633003 cover this particular use case.

BUG=None
TEST=Inspection of error paths show no more leaks.

Committed: https://crrev.com/f21f21fd88b6a96897c2678177383dfcbdf6f86a
Cr-Commit-Position: refs/heads/master@{#357136}

[robert.bradford, 2015-10-30 15:39:04]

robert.bradford@intel.com changed reviewers:
+ oshima@chromium.org

[robert.bradford, 2015-10-30 15:39:05]

Hi oshima@ PTAL. I've triggered The ASan build on the new unit tests to see if
it picked this up.

[oshima, 2015-10-30 16:49:29]

lgtm

We just talked about this leak a few days back. Thank you for fixing!

[robert.bradford, 2015-10-30 16:58:40]

The CQ bit was checked by robert.bradford@intel.com

[commit-bot: I haz the power, 2015-10-30 16:59:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1430573006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1430573006/1

[commit-bot: I haz the power, 2015-10-30 18:30:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-30 18:31:37]

Patchset 1 (id:??) landed as
https://crrev.com/f21f21fd88b6a96897c2678177383dfcbdf6f86a
Cr-Commit-Position: refs/heads/master@{#357136}