SECURITY: rate-limit and prevent blocked users from changing email

[lhc/web/wiklou.git] / includes / Linker.php

diff --git a/includes/Linker.php b/includes/Linker.php
index eb7a44f..ae50c66 100644 (file)
--- a/includes/Linker.php
+++ b/includes/Linker.php
@@ -894,7 +894,7 @@ class Linker {
         * @since 1.16.3. $altUserName was added in 1.19.
         */
        public static function userLink( $userId, $userName, $altUserName = false ) {
-               if ( $userName === '' ) {
+               if ( $userName === '' || $userName === false || $userName === null ) {
                        wfDebug( __METHOD__ . ' received an empty username. Are there database errors ' .
                                'that need to be fixed?' );
                        return wfMessage( 'empty-username' )->parse();