I noticed we sometimes had extra spaces before and after the "const"
keyword.  Probably the result of a search and replace gone wrong.

This is a whitespace only change.

Review URL: http://codereview.chromium.org/3427021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5519 ce2b1a6d-e550-0410-aec6-3dcde31c8c00