[gtk+] gtkmountoperation-x11: unbreak compilation on OpenBSD.

[Antoine Jacoutot <ajacoutot src gnome org>]

commit 3d165c1a902fc0a5f32898e406a79e53ed4bcc97
Author: Antoine Jacoutot <ajacoutot openbsd org>
Date:   Tue Sep 20 11:57:49 2011 +0200

    gtkmountoperation-x11: unbreak compilation on OpenBSD.
    
    Add missing header to prevent undeclared definitions.
    Bug #659565

 gtk/gtkmountoperation-x11.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkmountoperation-x11.c b/gtk/gtkmountoperation-x11.c
index 1663a02..52bce31 100644
--- a/gtk/gtkmountoperation-x11.c
+++ b/gtk/gtkmountoperation-x11.c
@@ -43,6 +43,7 @@
 #include <errno.h>
 
 #if defined(__OpenBSD__)
+#include <sys/param.h>
 #include <kvm.h>
 #include <fcntl.h>
 #include <sys/sysctl.h>