Add 'diff-with-additional' as optional

diff --git a/maintenance/language/messageTypes.inc b/maintenance/language/messageTypes.inc
index f9f7f95..2c4a938 100644 (file)
--- a/maintenance/language/messageTypes.inc
+++ b/maintenance/language/messageTypes.inc
@@ -315,6 +315,7 @@ $wgOptionalMessages = array(
        'timezone-utc',
        'whatlinkshere-backlink',
        'recentchangeslinked-backlink',
+       'diff-with-additional',
 );
 
 /** EXIF messages, which may be set as optional in several checks, but are generally mandatory */