Token middleware does not call application server's "next"

I'm using oauth2orize v1.0.1 with restify. The server is configured to use the token middleware as such:

var oauth2orize = require('oauth2orize');
var oauth2Server = oauth2orize.createServer();

server.post('/oauth/token',
      passport.authenticate('oauth2-client-password', { session: false }),
      oauth2Server.token(),
      oauth2Server.errorHandler()
);

The server is also configured to log after the server has finished processing a response.

server.on('after', function(req, res) {
    var responseLog = {
        type: 'response',
            method: req.method,
            path: req.path(),
            route: req.route && req.route.path
        };

    req.log.info(responseLog);
});

However, the logging code is not executed after /oauth/token requests. This is because the token middleware doesn't call restify's "next" method unless there's an error. You can see this if you add an additional middleware after oauth2Server.token().

var oauth2orize = require('oauth2orize');
var oauth2Server = oauth2orize.createServer();

server.post('/oauth/token',
      passport.authenticate('oauth2-client-password', { session: false }),
      oauth2Server.token(),
      function(req, res, next) {
            console.log('after token middleware'); // this doesn't get executed
            next();
      }
      oauth2Server.errorHandler()
);

I believe the token middleware should always call restify's "next" regardless of whether there's an error.

Start at the oauth2Server.token() middleware entry point and reproduce the request with the additional middleware shown in the issue. Verify that the middleware invokes restify's next callback on both successful and error paths, and confirm that the following middleware and the server's after handler run.