Add missing case for personal ruls which create blocking reviewers

Summary: Ref T1279. I only tested the global case. :O

Test Plan: Created a personal "add me as blocking" rule.

Reviewers: btrahan, zeeg

Reviewed By: zeeg

CC: aran

Maniphest Tasks: T1279

Differential Revision: https://secure.phabricator.com/D7261

src/applications/herald/adapter/HeraldAdapter.php

@@ -530,7 +530,7 @@ abstract class HeraldAdapter {
         case self::ACTION_AUDIT:
         case self::ACTION_ASSIGN_TASK:
         case self::ACTION_ADD_REVIEWERS:
-        case self::ACTION_ADD_REVIEWERS:
+        case self::ACTION_ADD_BLOCKING_REVIEWERS:
           // For personal rules, force these actions to target the rule owner.
           $target = array($author_phid);
           break;