From f0c1b896bae0c7f83cdf49e11dc105cc808f1c16 Mon Sep 17 00:00:00 2001
From: Max Bruckner <max@maxbruckner.de>
Date: Wed, 28 Jun 2017 16:00:41 +0200
Subject: [PATCH] handle null pointers: cJSONUtils_GeneratePatches

---
 cJSON_Utils.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/cJSON_Utils.c b/cJSON_Utils.c
index e13b903..35fc450 100644
--- a/cJSON_Utils.c
+++ b/cJSON_Utils.c
@@ -1228,7 +1228,14 @@ static void create_patches(cJSON * const patches, const unsigned char * const pa
 
 CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatches(cJSON * const from, cJSON * const to)
 {
-    cJSON *patches = cJSON_CreateArray();
+    cJSON *patches = NULL;
+
+    if ((from == NULL) || (to == NULL))
+    {
+        return NULL;
+    }
+
+    patches = cJSON_CreateArray();
     create_patches(patches, (const unsigned char*)"", from, to, false);
 
     return patches;