Fix one more instance of scoped_ptr<T>(NULL) on Windows.

Not sure why I missed this the first time.

BUG=173286
R=robertshield@chromium.org

Review URL: https://codereview.chromium.org/17911004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@208732 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed