[minor] Move private helper to end of file.

Author: indexzero

lib/node-http-proxy/http-proxy.js

@@ -116,9 +116,6 @@ util.inherits(HttpProxy, events.EventEmitter);
 // #### @res {ServerResponse} Outgoing HTTP Request to write proxied data to.
 // #### @buffer {Object} Result from `httpProxy.buffer(req)`
 //
-function getProto(req) {
-  return req.isSpdy ? 'https' : (req.connection.pair ? 'https' : 'http');
-}
 HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
   var self = this,
       errState = false,
@@ -899,3 +896,7 @@ HttpProxy.prototype._forwardRequest = function (req) {
     forwardProxy.end();
   });
 };
+
+function getProto(req) {
+  return req.isSpdy ? 'https' : (req.connection.pair ? 'https' : 'http');
+}