Show authors as usernames when they're linked

Summary: This data is available and loaded, just not used.

Test Plan: {F411442}

Reviewers: chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D12951

src/applications/audit/view/PhabricatorAuditListView.php

@@ -142,7 +142,12 @@ final class PhabricatorAuditListView extends AphrontView {
         $status_text = null;
         $status_color = null;
       }
-      $author_name = $commit->getCommitData()->getAuthorName();
+      $author_phid = $commit->getAuthorPHID();
+      if ($author_phid) {
+        $author_name = $this->getHandle($author_phid)->renderLink();
+      } else {
+        $author_name = $commit->getCommitData()->getAuthorName();
+      }
 
       $item = id(new PHUIObjectItemView())
         ->setObjectName($commit_name)