From cbfaa23428e29d3216afb75d5af2d2e129dd01c2 Mon Sep 17 00:00:00 2001
From: Rhodri James <rhodri@kynesim.co.uk>
Date: Tue, 25 Apr 2017 18:43:18 +0100
Subject: [PATCH] Validate parser parameter to XML_FreeContentModel

---
 expat/lib/xmlparse.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 9b2b6fa6..d4d17235 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -2083,7 +2083,8 @@ XML_GetCurrentColumnNumber(XML_Parser parser)
 void XMLCALL
 XML_FreeContentModel(XML_Parser parser, XML_Content *model)
 {
-  FREE(model);
+  if (parser != NULL)
+    FREE(model);
 }
 
 void * XMLCALL