Validate parser parameter to XML_SetEndDoctypeDeclHandler

diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index dad0b468f3684170400397bca73c2c9c3a9473be..8f71fcab8f03d185fd151e638a7ea2f4ee35a5c5 100644 (file)
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -1492,7 +1492,8 @@ XML_SetStartDoctypeDeclHandler(XML_Parser parser,
 void XMLCALL
 XML_SetEndDoctypeDeclHandler(XML_Parser parser,
                              XML_EndDoctypeDeclHandler end) {
-  endDoctypeDeclHandler = end;
+  if (parser != NULL)
+    endDoctypeDeclHandler = end;
 }
 
 void XMLCALL