Ticket #31319: 31319.3.diff

wp-includes/l10n.php

@@ -896 +896 @@
                         $languages[] = array(
                                 'language'    => $translation['language'],
                                 'native_name' => $translation['native_name'],
-                                'lang'        => $translation['iso'][1],
+                                'lang'        => current( $translation['iso'] ),
                         );
 
                         // Remove installed language from available translations.
@@ -942 +942 @@
                         $structure[] = sprintf(
                                 '<option value="%s" lang="%s"%s>%s</option>',
                                 esc_attr( $translation['language'] ),
-                                esc_attr( $translation['iso'][1] ),
+                                esc_attr( current( $translation['iso'] ) ),
                                 selected( $translation['language'], $args['selected'], false ),
                                 esc_html( $translation['native_name'] )
                         );