From ea1f407c06d12ae285aacfade24706314b867bbd Mon Sep 17 00:00:00 2001
From: Rhodri James <rhodri@kynesim.co.uk>
Date: Tue, 25 Apr 2017 18:48:16 +0100
Subject: [PATCH] Validate parser parameter to XML_DefaultCurrent

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

diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 7c91d87a..3ff3b48b 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -2113,6 +2113,8 @@ XML_MemFree(XML_Parser parser, void *ptr)
 void XMLCALL
 XML_DefaultCurrent(XML_Parser parser)
 {
+  if (parser == NULL)
+    return;
   if (defaultHandler) {
     if (openInternalEntities)
       reportDefault(parser,