key2.C: Silence the [-Wreturn-type] warning.

2018-12-29  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	* g++.dg/abi/key2.C: Silence the [-Wreturn-type] warning.

From-SVN: r267469

gcc/testsuite/ChangeLog

+2018-12-29  Dominique d'Humieres  <dominiq@gcc.gnu.org>
+
+	* g++.dg/abi/key2.C: Silence the [-Wreturn-type] warning.
+
 2018-12-29  Steven G. Kargl  <kargl@gcc.gnu.org>
 	* gfortran.dg/ieee/ieee_11.F90: New test.

gcc/testsuite/g++.dg/abi/key2.C

@@ -14,4 +14,4 @@ class f
 } c;
 inline void f::g() {}
 int sub(void)
-{}
+{return 0;}