fix XMLFilterBase.resolveEntity() so the caller gets the result
(PyXML bug #1112052)
diff --git a/Lib/xml/sax/saxutils.py b/Lib/xml/sax/saxutils.py
index 11dd25b..582b008 100644
--- a/Lib/xml/sax/saxutils.py
+++ b/Lib/xml/sax/saxutils.py
@@ -232,7 +232,7 @@
     # EntityResolver methods
 
     def resolveEntity(self, publicId, systemId):
-        self._ent_handler.resolveEntity(publicId, systemId)
+        return self._ent_handler.resolveEntity(publicId, systemId)
 
     # XMLReader methods