$OpenBSD: patch-libtest_test_hpp,v 1.1 2018/10/26 15:47:30 sthen Exp $

unbreak with gcc 4.9

Index: libtest/test.hpp
--- libtest/test.hpp.orig
+++ libtest/test.hpp
@@ -59,6 +59,7 @@
 
 #include <cstdio>
 #include <cstdlib>
+#include <cstdarg>
 #include <arpa/inet.h>
 
 #include <libtest/visibility.h>
