Valgrind: Fix uninitialized variable from r133076.
Valgrind: Fix uninitialized variable from r133076.

BUG=none
TEST=Valgrind bots gets greener.
Review URL: https://chromiumcodereview.appspot.com/10140005

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@133088 0039d316-1c4b-4281-b951-d872f2087c98

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