PR c++/63455
	Revert:
	* parser.c (cp_parser_abort_tentative_parse): Make sure we haven't
	committed to this tentative parse.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@216261 138bc75d-0d04-0410-961f-82ee72b054a4