Fix lint errors found by Nemo

Summary:
See also:

- https://github.com/tpyo/amazon-s3-php-class/pull/33
- https://github.com/stripe/stripe-php/pull/13

Test Plan: Ran a script analyzing sources by HPHP.

Reviewers: btrahan, jungejason, epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D2713

src/applications/oauthserver/controller/PhabricatorOAuthServerTestController.php

@@ -29,7 +29,7 @@ extends PhabricatorOAuthServerController {
   public function processRequest() {
     $request      = $this->getRequest();
     $current_user = $request->getUser();
-    $server       = new PhabricatorOAuthServer($current_user);
+    $server       = new PhabricatorOAuthServer();
     $panels       = array();
     $results      = array();