PR c/71115 - [4.9/5/6/7 Regression] Missing warning: excess elements
in struct initializer

gcc/c/ChangeLog:
2016-05-20  Martin Sebor  <msebor@redhat.com>

	PR c/71115
	* c-typeck.c (error_init): Use
	expansion_point_location_if_in_system_header.
	(warning_init): Same.

gcc/testsuite/ChangeLog:
2016-05-20  Martin Sebor  <msebor@redhat.com>

	PR c/71115
	* gcc.dg/init-excess-2.c: New test.

From-SVN: r236549