Submitting on bahalf of Michele Aiello.

Fix Xcode 5.1 compilation issues.
Moving a couple of variable under #ifdef to avoid build warnings.

R=blundell@chromium.org, mark@chromium.org

Review URL: https://breakpad.appspot.com/1054002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1272 4c0a9323-5329-0410-9bdc-e9ce6186880e