re PR c++/45332 (Generate clear diagnostics when a terminating semicolon is missing from a class member declaration.)

gcc/cp/
	PR c++/45332
	* parser.c (cp_lexer_previous_token): New function.
	(cp_parser_member_declaration): Use previous token for error
	messages.  Assume semicolon presence rather than grovelling for
	the next one.

gcc/testsuite/
	PR c++/45332
	* g++.dg/parse/semicolon2.C: New testcase.
	* g++.dg/ext/asmspec1.C: Adjust.
	* g++.dg/init/new13.C: Adjust.
	* g++.dg/parse/ctor5.C: Adjust.

From-SVN: r166406