Eliminate redundant initialization following r1188,
https://breakpad.appspot.com/599002

R=ivan.penkov@gmail.com

Review URL: https://breakpad.appspot.com/604002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1192 4c0a9323-5329-0410-9bdc-e9ce6186880e