Work around two ASSERTs that we're hitting now that DEBUG is #defined again

R=danno@chromium.org

Review URL: https://codereview.chromium.org/49433002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17418 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Prepare push to trunk.  Now working on version 3.22.24.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/49263003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17419 ce2b1a6d-e550-0410-aec6-3dcde31c8c00