add missing header to allow regress tests to run (missed in previous commit)

net/farstream/patches/patch-tests_check_testutils_c

@@ -0,0 +1,11 @@
+$OpenBSD: patch-tests_check_testutils_c,v 1.3 2013/03/26 13:56:48 jasper Exp $
+--- tests/check/testutils.c.orig	Tue Mar 26 14:50:53 2013
++++ tests/check/testutils.c	Tue Mar 26 14:54:06 2013
+@@ -28,6 +28,7 @@
+ 
+ #ifdef HAVE_GETIFADDRS
+  #include <sys/socket.h>
++ #include <netinet/in.h>
+  #include <ifaddrs.h>
+  #include <net/if.h>
+  #include <arpa/inet.h>