Merge pull request #115 from carouselapps/null-protocol

Consider null protocol as missing protocol, not an unsupported one.

Author: driverdan

lib/XMLHttpRequest.js

@@ -284,6 +284,7 @@ exports.XMLHttpRequest = function() {
         break;
 
       case undefined:
+      case null:
       case "":
         host = "localhost";
         break;