From 724740cc197bf6c67a7d3da54b27e5450b6c7cd9 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Wed, 1 Aug 2018 18:54:15 +0200
Subject: [PATCH] More commenting of zslUpdateScore().

---
 src/t_zset.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/t_zset.c b/src/t_zset.c
index 16ec715e..a794b44c 100644
--- a/src/t_zset.c
+++ b/src/t_zset.c
@@ -259,6 +259,8 @@ zskiplistNode *zslUpdateScore(zskiplist *zsl, double curscore, sds ele, double n
     zskiplistNode *update[ZSKIPLIST_MAXLEVEL], *x;
     int i;
 
+    /* We need to seek to element to update to start: this is useful anyway,
+     * we'll have to update or remove it. */
     x = zsl->header;
     for (i = zsl->level-1; i >= 0; i--) {
         while (x->level[i].forward &&