From d20093519879b3069e22959774d1b7ed08db4815 Mon Sep 17 00:00:00 2001
From: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date: Wed, 10 Jan 2018 15:54:09 +0100
Subject: [PATCH] stratum: null ptr check on json arrays

---
 stratum/json.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stratum/json.cpp b/stratum/json.cpp
index ca70ef7..3ceba40 100644
--- a/stratum/json.cpp
+++ b/stratum/json.cpp
@@ -503,7 +503,7 @@ json_value * json_parse_ex (json_settings * settings,
 
                case ']':
 
-                  if (top->type == json_array)
+                  if (top && top->type == json_array)
                      flags = (flags & ~ (flag_need_comma | flag_seek_value)) | flag_next;
                   else
                   {  sprintf (error, "%d:%d: Unexpected ]", cur_line, e_off);