Revert of Fixing all of problems found by vc++ /analyze in GCM code

Revert of Fixing all of problems found by vc++ /analyze in GCM code (patchset #1 id:1 of https://codereview.chromium.org/713573003/)

Reason for revert:
Reverting since it's causing a crash on canary.

Original issue's description:
> Fixing all of problems found by vc++ /analyze in GCM code
>
> There was only a minor (harmless) case of variable shadowing.
>
> BUG=427616
> R=zea@chromium.org
>
> Committed: https://crrev.com/3e021981ccc2be8de7443ff1a18439551b22ea75
> Cr-Commit-Position: refs/heads/master@{#303338}

TBR=zea@chromium.org,brucedawson@chromium.org,fgorski@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=427616
Committed: https://crrev.com/bca70e90f5c0de7b071d277e0d7886e1e0823572
Cr-Commit-Position: refs/heads/master@{#303396}

[matthewyuan, 2014-11-08 22:27:47]

Created Revert of Fixing all of problems found by vc++ /analyze in GCM code

[commit-bot: I haz the power, 2014-11-08 22:28:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/712793003/1

[commit-bot: I haz the power, 2014-11-08 22:28:28]

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

[commit-bot: I haz the power, 2014-11-08 22:28:29]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[kareng, 2014-11-08 22:34:32]

On 2014/11/08 22:28:29, I haz the power (commit-bot) wrote:
> No LGTM from a valid reviewer yet. Only full committers are accepted.
> Even if an LGTM may have been provided, it was from a non-committer,
> _not_ a full super star committer.
> See http://www.chromium.org/getting-involved/become-a-committer
> Note that this has nothing to do with OWNERS files.

LGTM

[kareng, 2014-11-08 22:34:35]

The CQ bit was checked by kareng@google.com

[commit-bot: I haz the power, 2014-11-08 22:35:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/712793003/1

[commit-bot: I haz the power, 2014-11-08 22:36:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-08 22:36:53]

Patchset 1 (id:??) landed as
https://crrev.com/bca70e90f5c0de7b071d277e0d7886e1e0823572
Cr-Commit-Position: refs/heads/master@{#303396}