From cb2c31cfa4df8d67685c56ec8335a48df8e6114e Mon Sep 17 00:00:00 2001
From: "Zane U. Ji" <ZaneUJi@gmail.com>
Date: Mon, 5 May 2014 20:25:17 +0800
Subject: [PATCH] Fixed a crash

---
 src/wrapxerces.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/wrapxerces.cpp b/src/wrapxerces.cpp
index 2712471..7302b2b 100644
--- a/src/wrapxerces.cpp
+++ b/src/wrapxerces.cpp
@@ -271,6 +271,9 @@ InputSource *WrapXerces::resolveEntity (
 		return new LocalFileInputSource (
 				( const XMLCh * ) WrapXerces::toString ( file ).GetData() );
 
+	if (systemId.empty() && publicId.empty())
+		return NULL;
+
 	wxString fileURL = WrapLibxml::FileNameToURL ( fileName );
 	return new URLInputSource
 		( ( const XMLCh * ) WrapXerces::toString ( fileURL ).GetData()