title: Busboy throwing undefined exception
body: <p>I am getting the following exception when I invoke the /list method using the following command</p>
  
  <pre><code>'curl -v  http://ec2-54-68-202-47.us-west-2.compute.amazonaws.com:8080/list/?name=test'
  </code></pre>
  
  <p><strong>Error :</strong></p>
  
  <blockquote>
    <p>110.175.53.235 - - [Sun, 05 Oct 2014 13:08:27 GMT] "GET /list/?name=dafsdf HTTP/1.1" 500 1273 "-" "curl/7.26.0" TypeError:
    Cannot call method 'on' of undefined</p>
  </blockquote>
  
  <p>Its fine if I invoke the '/image/upload' url.</p>
  
  <pre><code>// Import required modules
  var express = require('express');
  var morgan = require('morgan');
  
  var busboy = require('connect-busboy');
  var fs = require('fs');
  var path = require('path');
  
  
  
  var app = express();
  
  app.use(busboy());
  app.use(morgan('combined'));
  
  app.get('/list', function(req, res) {
          console.log("Hit the url /list");
          req.busboy.on('field', function(fieldname, val) {
                  //console.log('Field [' +fieldname);               
                  res.send("data received");
          });
          //req.pipe(req.busboy);
  });
  
  app.post('/image/upload', function(req, res) {
          req.busboy.on('file', function(fieldname, file, filename) {
                  ...
                  res.send("file received");
          });
          req.pipe(req.busboy);
  });
  
  // Run the application on port 3000
  app.listen(8080, function() {
          console.log('Echo Application running at %d', 8080);
  });
  </code></pre>