TEST=GCC 4.5.3 successfully compiles d8.cc even with -Werror enabled.

Review URL: http://codereview.chromium.org/8296018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9679 ce2b1a6d-e550-0410-aec6-3dcde31c8c00