Fix an issue with PHID/handle management in push logs

Summary: Ref T10751. This cleans this up so it's a little more modern, and fixes a possible bad access on the log detail page.

Test Plan: Viewed push log list, viewed push log detail.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10751

Differential Revision: https://secure.phabricator.com/D15765

src/applications/diffusion/controller/DiffusionPushEventViewController.php

@@ -50,8 +50,7 @@ final class DiffusionPushEventViewController
 
     $updates_table = id(new DiffusionPushLogListView())
       ->setUser($viewer)
-      ->setLogs($logs)
-      ->setHandles($this->loadViewerHandles(mpull($logs, 'getPusherPHID')));
+      ->setLogs($logs);
 
     $update_box = id(new PHUIObjectBoxView())
       ->setHeaderText(pht('All Pushed Updates'))