From 2ca46efd6e8591c0e234c3954ceb15b260a6a3f8 Mon Sep 17 00:00:00 2001
From: Tobias <churchofemacs@users.mediawiki.org>
Date: Mon, 29 Mar 2010 19:45:54 +0000
Subject: [PATCH] (bug 22627) Remove PHP notice when deleting a page only
 hidden users edited.

---
 RELEASE-NOTES        |  1 +
 includes/Article.php | 16 ++++++++++------
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 2ddf0b5d9e..ea7a829b31 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -66,6 +66,7 @@ it from source control: http://www.mediawiki.org/wiki/Download_from_SVN
   links with non-NFC character references work correctly.
 * (bug 22991) wgUserGroups JavaScript variable now reports * group for
   anonymous users instead of null.
+* (bug 22627) Remove PHP notice when deleting a page only hidden users edited.
 
 == API changes in 1.17 ==
 * (bug 22738) Allow filtering by action type on query=logevent
diff --git a/includes/Article.php b/includes/Article.php
index d0f8f7444f..eface19f8b 100644
--- a/includes/Article.php
+++ b/includes/Article.php
@@ -2545,13 +2545,17 @@ class Article {
 
 		$hasHistory = ( $res->numRows() > 1 );
 		$row = $dbw->fetchObject( $res );
-		$onlyAuthor = $row->rev_user_text;
-		// Try to find a second contributor
-		foreach ( $res as $row ) {
-			if ( $row->rev_user_text != $onlyAuthor ) {
-				$onlyAuthor = false;
-				break;
+		if ( $row ) { // $row is false if the only contributor is hidden
+			$onlyAuthor = $row->rev_user_text;
+			// Try to find a second contributor
+			foreach ( $res as $row ) {
+				if ( $row->rev_user_text != $onlyAuthor ) { // Bug 22999
+					$onlyAuthor = false;
+					break;
+				}
 			}
+		} else {
+			$onlyAuthor = false;
 		}
 		$dbw->freeResult( $res );
 
-- 
2.20.1