PR preprocessor/29966:

	* macro.c (lex_expansion_token): Save and restore cpp_reader's
	cur_token.
	(_cpp_create_definition): Don't restore cur_token here.
	* lex.c (_cpp_lex_token): Added assertion.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@121340 138bc75d-0d04-0410-961f-82ee72b054a4