From 04cc0773d886159f1dbdb9a58bae4fb43b93d49d Mon Sep 17 00:00:00 2001
From: Hartmut Brandt <harti@FreeBSD.org>
Date: Fri, 10 Jun 2005 11:44:57 +0000
Subject: [PATCH] Make the default RB_AUGMENT() produce a 'do {} while (0)'
 instead of nothing. This prevents the compiler from complaining about empty
 if statements when compiled with higher WARN levels.

---
 sys/sys/tree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/sys/tree.h b/sys/sys/tree.h
index 063b03ca95f..6682ec7762f 100644
--- a/sys/sys/tree.h
+++ b/sys/sys/tree.h
@@ -332,7 +332,7 @@ struct {								\
 } while (/*CONSTCOND*/ 0)
 
 #ifndef RB_AUGMENT
-#define RB_AUGMENT(x)
+#define RB_AUGMENT(x)	do {} while (0)
 #endif
 
 #define RB_ROTATE_LEFT(head, elm, tmp, field) do {			\