Ticket #41970: remove-unused-variable.patch

upgrade.php

@@ -1591 +1591 @@
  * @ignore
  * @since 4.3.0
  *
- * @global int  $wp_current_db_version Current version.
  * @global wpdb $wpdb                  WordPress database abstraction object.
  */
 function upgrade_430_fix_comments() {
-        global $wp_current_db_version, $wpdb;
+        global $wpdb;
 
         $content_length = $wpdb->get_col_length( $wpdb->comments, 'comment_content' );