Protect from multiple include.

diff --git a/sys/sys/timeout.h b/sys/sys/timeout.h
index d1981a4..f95f95a 100644 (file)
--- a/sys/sys/timeout.h
+++ b/sys/sys/timeout.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: timeout.h,v 1.3 2000/03/23 11:24:42 art Exp $ */
+/*     $OpenBSD: timeout.h,v 1.4 2000/03/23 14:59:23 art Exp $ */
 /*
  * Copyright (c) 2000 Artur Grabowski <art@openbsd.org>
  * All rights reserved. 
@@ -27,6 +27,9 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
+#ifndef _SYS_TIMEOUT_H_
+#define _SYS_TIMEOUT_H_
+
 #include <sys/queue.h>
 
 /*
@@ -102,3 +105,4 @@ int timeout_hardclock_update __P((void));
  */
 extern int ntimeout;
 extern struct timeout *timeouts;
+#endif /* _SYS_TIMEOUT_H_ */