[minor] default enableXForwarded to true

lib/node-http-proxy.js

@@ -341,7 +341,8 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
   options      = options || {};
   options.host = options.host || this.target.host;
   options.port = options.port || this.target.port;
-  options.enableXForwarded = options.enableXForwarded || false;
+  options.enableXForwarded = 
+    (undefined === options.enableXForwarded ? true : options.enableXForwarded);
   
   //
   // Check the proxy table for this instance to see if we need
@@ -589,7 +590,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
 
   options      = options || {};
   options.host = options.host || this.target.host;
-  options.port = options.port || this.target.port;  //
+  options.port = options.port || this.target.port;
   
   if (this.proxyTable && !options.host) {
     location = this.proxyTable.getProxyLocation(req);