From 071f8ab6339db5a487ca0ca2079052f554190cf1 Mon Sep 17 00:00:00 2001
From: ZhaoYandong00 <zhaoyandong00@hotmail.com>
Date: Wed, 15 Nov 2023 15:16:24 +0800
Subject: [PATCH] Update cJSON.c

fix strlen(NULL)
---
 cJSON.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cJSON.c b/cJSON.c
index f6dd11c5..f2204384 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -405,7 +405,7 @@ CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring)
     {
         return NULL;
     }
-    if (strlen(valuestring) <= strlen(object->valuestring))
+    if (object->valuestring && (strlen(valuestring) <= strlen(object->valuestring)))
     {
         strcpy(object->valuestring, valuestring);
         return object->valuestring;