Adds checks to see if permission keys exist before checking their values.

diff --git a/includes/Title.php b/includes/Title.php
index 490ebfa..e3d71a0 100644 (file)
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -1175,8 +1175,15 @@ class Title {
                        if( !$user->isAllowed( 'move' ) ) {
                                // User can't move anything
                                global $wgGroupPermissions;
-                               if( $user->isAnon() && ( $wgGroupPermissions['user']['move']
-                               || $wgGroupPermissions['autoconfirmed']['move'] ) ) {
+                               $userCanMove = false;
+                               if ( isset( $wgGroupPermissions['user']['move'] ) {
+                                       $userCanMove = $wgGroupPermissions['user']['move'];
+                               }
+                               $autoconfirmedCanMove = false;
+                               if ( isset( $wgGroupPermissions['autoconfirmed']['move'] ) {
+                                       $autoconfirmedCanMove = $wgGroupPermissions['autoconfirmed']['move'];
+                               }
+                               if ( $user->isAnon() && ( $userCanMove || $autoconfirmedCanMove ) ) {
                                        // custom message if logged-in users without any special rights can move
                                        $errors[] = array ( 'movenologintext' );
                                } else {