From 9bf4960cd525428ddbfb9b13f39c4269083b18d7 Mon Sep 17 00:00:00 2001
From: Alanscut <wp_scut@163.com>
Date: Fri, 16 Oct 2020 17:06:29 +0800
Subject: [PATCH] fix a possible dereference of null pointer

---
 cJSON_Utils.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cJSON_Utils.c b/cJSON_Utils.c
index f4ad32a..8e70e00 100644
--- a/cJSON_Utils.c
+++ b/cJSON_Utils.c
@@ -1406,6 +1406,10 @@ static cJSON *generate_merge_patch(cJSON * const from, cJSON * const to, const c
     from_child = from->child;
     to_child = to->child;
     patch = cJSON_CreateObject();
+    if (patch == NULL)
+    {
+        return NULL;
+    }
     while (from_child || to_child)
     {
         int diff;