From 9b06217571eb5d89aa0b0a140bffa4400d02b911 Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Thu, 26 Aug 2021 16:58:42 +0800
Subject: [PATCH] [TD-6356]<fix>: Fix the crash in TS-187

---
 src/util/src/tutil.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 552df2346d..ae10dd265a 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -227,8 +227,7 @@ char* strntolower_s(char *dst, const char *src, int32_t n) {
 
   assert(dst != NULL);
   if (n == 0) {
-    *p = 0;
-    return dst;
+    return NULL;
   }
 
   while (n-- > 0) {