libusb: Fix composite_close to close HID handles as well.

libusb: Fix composite_close to close HID handles as well.

When opening a composite device some combination of the WinUSB and HID
APIs may be used. This patch fixes composite_close to close both WinUSB
file handles and HID file handles.

BUG=466578
Committed: https://crrev.com/e56e8ef67c39f1a6ea256939ec8f6f5ee82e59cf
Cr-Commit-Position: refs/heads/master@{#321881}

[Reilly Grant (use Gerrit), 2015-03-23 21:10:07]

reillyg@chromium.org changed reviewers:
+ rockot@chromium.org

[Reilly Grant (use Gerrit), 2015-03-23 21:10:08]

Please take a look.

[Ken Rockot(use gerrit already), 2015-03-23 22:37:36]

lgtm

[Ken Rockot(use gerrit already), 2015-03-23 22:37:44]

On 2015/03/23 22:37:36, Ken Rockot wrote:
> lgtm

also, yikes

[Reilly Grant (use Gerrit), 2015-03-23 22:41:15]

The CQ bit was checked by reillyg@chromium.org

[commit-bot: I haz the power, 2015-03-23 22:41:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1032563002/1

[commit-bot: I haz the power, 2015-03-23 22:48:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-23 22:49:42]

Patchset 1 (id:??) landed as
https://crrev.com/e56e8ef67c39f1a6ea256939ec8f6f5ee82e59cf
Cr-Commit-Position: refs/heads/master@{#321881}