Replace some hsprintf() by phutil_tag()

Test Plan: Looked at a diff with inline comment.

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7549

src/applications/base/controller/PhabricatorController.php

@@ -246,8 +246,9 @@ abstract class PhabricatorController extends AphrontController {
         $view = new PhabricatorStandardPageView();
         $view->setRequest($request);
         $view->setController($this);
-        $view->appendChild(hsprintf(
-          '<div style="padding: 2em 0;">%s</div>',
+        $view->appendChild(phutil_tag(
+          'div',
+          array('style' => 'padding: 2em 0;'),
           $response->buildResponseString()));
         $page_response = new AphrontWebpageResponse();
         $page_response->setContent($view->render());