From 74a2d73ac9054fafb654474a38f51c8638283bdd Mon Sep 17 00:00:00 2001
From: Kunal Mehta <legoktm@gmail.com>
Date: Tue, 11 Feb 2014 21:44:34 -0800
Subject: [PATCH] Only call ->clearInstanceCache() if $targetUser instanceof
 User

Bug: 61252
Change-Id: Ibb79ca9a27e50b58fdd5dd541e243054fb095753
---
 includes/specials/SpecialUserrights.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/includes/specials/SpecialUserrights.php b/includes/specials/SpecialUserrights.php
index b4757e0fa1..a6b36024e8 100644
--- a/includes/specials/SpecialUserrights.php
+++ b/includes/specials/SpecialUserrights.php
@@ -152,7 +152,10 @@ class UserrightsPage extends SpecialPage {
 			}
 
 			$targetUser = $status->value;
-			$targetUser->clearInstanceCache();
+			if ( $targetUser instanceof User ) { // UserRightsProxy doesn't have this method (bug 61252)
+				$targetUser->clearInstanceCache(); // bug 38989
+			}
+
 
 			if ( $request->getVal( 'conflictcheck-originalgroups' ) !== implode( ',', $targetUser->getGroups() ) ) {
 				$out->addWikiMsg( 'userrights-conflict' );
-- 
2.20.1