Fix invalid ASSERT on 3.27 branch

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/483603005

git-svn-id: https://v8.googlecode.com/svn/branches/3.27@23154 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2 files changed