980716-1.c: Avoid undefined behavior due to passing terminating NULL as int rather than pointer.

	* gcc.c-torture/execute/980716-1.c: Avoid undefined behavior due to
	passing terminating NULL as int rather than pointer.

From-SVN: r231458

gcc/testsuite/ChangeLog

+2015-12-09  Alexander Monakov  <amonakov@ispras.ru>
+
+	* gcc.c-torture/execute/980716-1.c: Avoid undefined behavior due to
+	passing terminating NULL as int rather than pointer.
+
 2015-12-09  Marek Polacek  <polacek@redhat.com>
 
 	PR tree-optimization/66949

gcc/testsuite/gcc.c-torture/execute/980716-1.c

@@ -20,7 +20,7 @@ stub(int num, ...)
 int
 main()
 {
-    stub(1, "ab", "bc", "cx", 0);
+    stub(1, "ab", "bc", "cx", (char *)0);
     exit (0);
 }