From 1df987a170a7d3c8692f53982eca0934d6e0e282 Mon Sep 17 00:00:00 2001
From: Max Bruckner <max@maxbruckner.de>
Date: Thu, 5 Jan 2017 21:31:17 +0100
Subject: [PATCH] cJSON_strdup: Check for NULL string

---
 cJSON.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cJSON.c b/cJSON.c
index d0aad03..6ded617 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -88,6 +88,11 @@ static char* cJSON_strdup(const char* str)
     size_t len = 0;
     char *copy = NULL;
 
+    if (str == NULL)
+    {
+        return NULL;
+    }
+
     len = strlen(str) + 1;
     if (!(copy = (char*)cJSON_malloc(len)))
     {