Mon, 18 Mar 2019 12:09:41 +0300check_source.sh: fix sed error: -e expression #1, char 25: Invalid range end
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Mon, 18 Mar 2019 12:09:41 +0300] rev 2547
check_source.sh: fix sed error: -e expression #1, char 25: Invalid range end

Warning happen only if old sed (4.4) is used.