From cc84a446be20cc283bafdc4d94c050ba1111ac02 Mon Sep 17 00:00:00 2001
From: Max Bruckner <max@maxbruckner.de>
Date: Thu, 23 Mar 2017 21:27:54 +0100
Subject: [PATCH] ensure: Fix potential off by one error.

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

diff --git a/cJSON.c b/cJSON.c
index 283faa0..8c0e932 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -259,7 +259,7 @@ static unsigned char* ensure(printbuffer * const p, size_t needed, const interna
         return NULL;
     }
 
-    needed += p->offset;
+    needed += p->offset + 1;
     if (needed <= p->length)
     {
         return p->buffer + p->offset;