re PR c/69798 (ICE on invalid code on x86_64-linux-gnu in c_parser_braced_init, at c/c-parser.c:4338)

	PR c/69798
	* c-parser.c (c_parser_postfix_expression): Call
	c_parser_cast_expression rather than c_parser_postfix_expression.

	* gcc.dg/cilk-plus/pr69798-1.c: New test.
	* gcc.dg/cilk-plus/pr69798-2.c: New test.

From-SVN: r233965