From 2f4dd7e0fd0581ddf630ea5d928a9dce42f175e7 Mon Sep 17 00:00:00 2001
From: antirez <antirez@metal.(none)>
Date: Fri, 21 May 2010 12:30:56 +0200
Subject: [PATCH] minor fix for the skiplist code, resulting in a false
 positive with valgrind, and in general into a useless small allocation

---
 redis.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/redis.c b/redis.c
index 76682d82..eab76212 100644
--- a/redis.c
+++ b/redis.c
@@ -5412,8 +5412,10 @@ static zskiplistNode *zslCreateNode(int level, double score, robj *obj) {
     zskiplistNode *zn = zmalloc(sizeof(*zn));
 
     zn->forward = zmalloc(sizeof(zskiplistNode*) * level);
-    if (level > 0)
+    if (level > 1)
         zn->span = zmalloc(sizeof(unsigned int) * (level - 1));
+    else
+        zn->span = NULL;
     zn->score = score;
     zn->obj = obj;
     return zn;