$OpenBSD: patch-sysdeps_openbsd_open_c,v 1.9 2015/12/11 14:19:04 jasper Exp $

From 02070b7170f98b1b00d6923b00f5ac48f31f0ef2 Mon Sep 17 00:00:00 2001
From: Jasper Lievisse Adriaanse <jasper@humppa.nl>
Date: Fri, 11 Dec 2015 15:03:49 +0100
Subject: Add various headers to unbreak compilation

--- sysdeps/openbsd/open.c.orig	Fri Dec 11 14:27:05 2015
+++ sysdeps/openbsd/open.c	Fri Dec 11 14:27:21 2015
@@ -21,6 +21,7 @@
 
 #include <config.h>
 #include <sys/types.h>
+#include <sys/sysctl.h>
 #include <glibtop.h>
 #include <glibtop/open.h>
 #include <glibtop/cpu.h>
