From c404e5b3bdd2c7e16cdab6c3bc722425085bb83f Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Mon, 16 Apr 2001 21:24:38 +0000
Subject: [PATCH] countnode234() should politely return 0 when passed NULL. Was
 breaking delpos234(empty_tree, 0).

git-svn-id: svn://svn.tartarus.org/sgt/putty@1054 cda61777-01e9-0310-a592-d414129be87e
---
 tree234.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tree234.c b/tree234.c
index 1f026708..1aac3a6b 100644
--- a/tree234.c
+++ b/tree234.c
@@ -90,6 +90,8 @@ void freetree234(tree234 *t) {
 static int countnode234(node234 *n) {
     int count = 0;
     int i;
+    if (!n)
+	return 0;
     for (i = 0; i < 4; i++)
 	count += n->counts[i];
     for (i = 0; i < 3; i++)
-- 
2.11.0