check if xml.attributes is available before checking length.

Author: djett

src/xml2json.js

@@ -118,7 +118,7 @@
 		var root = {};
 		if (typeof xml.attributes === 'undefined') {
 			root[xml.nodeName] = xml2jsonImpl(xml, options);
-		} else if (xml.attributes.length === 0 && xml.childElementCount === 0){
+		} else if (xml.attributes && xml.attributes.length === 0 && xml.childElementCount === 0){
 			root[xml.nodeName] = normalize(xml.textContent, options);
 		} else {
 			root[xml.nodeName] = xml2jsonImpl(xml, options);