See https://github.com/joyent/node/issues/7120

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/178073002

Patch from Alexis Campailla <alexis@janeasystems.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20335 ce2b1a6d-e550-0410-aec6-3dcde31c8c00