This fixes an omission in cl 10818026.
Patch by Nathan Rajlich.

Review URL: https://chromiumcodereview.appspot.com/10913256
Patch from Bert Belder <bertbelder@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12501 ce2b1a6d-e550-0410-aec6-3dcde31c8c00