The state here should be NO_REGISTERS.  It was spuriously changed to from
NO_REGISTERS to TOS_REG when TOS_EAX was renamed to TOS_REG.

BUG=v8:1113

Review URL: http://codereview.chromium.org/6452007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6682 ce2b1a6d-e550-0410-aec6-3dcde31c8c00