https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01432.html
	PR c++/83406
	* parser.c (cp_parser_lambda_body): Remove obsolete
	single-return-statement handling.

	PR c++/83406
	* g++.dg/cpp0x/lambda/lambda-ice15.C: Adjust error.
	* g++.dg/cpp1y/pr83406.C: New.

From-SVN: r255950