Fixed memory leak: release extracted xml tag if invalid.

git-svn-id: http://yate.null.ro/svn/yate/trunk@4048 acf43c95-373e-0410-b603-e72c3f656dc1

libs/yxml/XML.cpp

@@ -579,6 +579,7 @@ bool XmlSaxParser::parseElement()
 	// Names starting with 'xml' (case insensitive) are reserved
 	if (name->startsWith("xml",false,true)) {
 	    Debug(this,DebugNote,"Element tag starts with 'xml' [%p]",this);
+	    TelEngine::destruct(name);
 	    return setError(ReadElementName);
 	}
 #endif