From 0c35f54f0a12b3dada3e7156f6595af4a089e24e Mon Sep 17 00:00:00 2001
From: Lu JJ <41555481+ncghost1@users.noreply.github.com>
Date: Mon, 25 Apr 2022 22:47:45 +0800
Subject: [PATCH] fix an unclear comment and add  a comment to 'zi' in
 'quicklist.h' (#10633)

fix an unclear comment quicklist container formats to quicklist node container formats
Add a comment to 'zi' in quicklistIter (Where it first appeared)
Why do I add a comment to zi:
Because it is not a variable name with a clear meaning, and its name seems to be from the deprecated ziplist.
---
 src/quicklist.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/quicklist.h b/src/quicklist.h
index dc30cafd9..8d6951b62 100644
--- a/src/quicklist.h
+++ b/src/quicklist.h
@@ -116,7 +116,7 @@ typedef struct quicklist {
 typedef struct quicklistIter {
     quicklist *quicklist;
     quicklistNode *current;
-    unsigned char *zi;
+    unsigned char *zi; /* points to the current element */
     long offset; /* offset in current listpack */
     int direction;
 } quicklistIter;
@@ -141,7 +141,7 @@ typedef struct quicklistEntry {
 /* quicklist compression disable */
 #define QUICKLIST_NOCOMPRESS 0
 
-/* quicklist container formats */
+/* quicklist node container formats */
 #define QUICKLIST_NODE_CONTAINER_PLAIN 1
 #define QUICKLIST_NODE_CONTAINER_PACKED 2