From 10a1be900f1e503a002162b9afaf31ab4473c975 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Tue, 23 Jun 2020 11:36:43 +0800
Subject: [PATCH] [td-225] opt destroy function of skiplist

---
 src/util/src/tskiplist.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/util/src/tskiplist.c b/src/util/src/tskiplist.c
index 3a474fe6c1..2394adc6f3 100644
--- a/src/util/src/tskiplist.c
+++ b/src/util/src/tskiplist.c
@@ -194,13 +194,12 @@ void *tSkipListDestroy(SSkipList *pSkipList) {
     pthread_rwlock_wrlock(pSkipList->lock);
   }
 
-  SSkipListNode *pNode = SL_GET_FORWARD_POINTER(pSkipList->pHead, 0);
+  if (pSkipList->keyInfo.freeNode) {
+    SSkipListNode *pNode = SL_GET_FORWARD_POINTER(pSkipList->pHead, 0);
 
-  while (pNode != pSkipList->pTail) {
-    SSkipListNode *pTemp = pNode;
-    pNode = SL_GET_FORWARD_POINTER(pNode, 0);
-    
-    if (pSkipList->keyInfo.freeNode) {
+    while (pNode != pSkipList->pTail) {
+      SSkipListNode *pTemp = pNode;
+      pNode = SL_GET_FORWARD_POINTER(pNode, 0);
       tfree(pTemp);
     }
   }
-- 
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