From 7d9d4ae8505a56e0e2ed1249e9122138718fb0e1 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Thu, 24 Aug 2023 16:26:30 +0800
Subject: [PATCH] fix(stream): fix the ptr ref.

---
 source/dnode/vnode/src/tq/tqRead.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index d3157dc3b0..ae150750df 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -297,7 +297,6 @@ int32_t tqReaderSeek(STqReader* pReader, int64_t ver, const char* id) {
 
 int32_t extractMsgFromWal(SWalReader* pReader, void** pItem, int64_t maxVer, const char* id) {
   int32_t code = 0;
-  SWalCont* pCont = &pReader->pHead->head;
 
   while(1) {
     code = walNextValidMsg(pReader);
@@ -305,6 +304,7 @@ int32_t extractMsgFromWal(SWalReader* pReader, void** pItem, int64_t maxVer, con
       return code;
     }
 
+    SWalCont* pCont = &pReader->pHead->head;
     int64_t ver = pCont->version;
     if (ver > maxVer) {
       tqDebug("maxVer in WAL:%" PRId64 " reached current:%" PRId64 ", do not scan wal anymore, %s", maxVer, ver, id);