Fix use of uninitialized raw pointer in oilpan build.
Fix use of uninitialized raw pointer in oilpan build.

TBR=dstockwell@chromium.org, haraken@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/220663003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@170545 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs