This fixes 5 leaks, returning 1.6kB of lost memory.

Shocking news: I've actually introduced a 2nd-order macro for myself. I guess
I've been assimilated... ;-)

Review URL: https://chromiumcodereview.appspot.com/9860028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11179 ce2b1a6d-e550-0410-aec6-3dcde31c8c00