Bug 15697 - [QA Followup] Apply change to NORMARC

Bug 15697 - [QA Followup] Apply change to NORMARC

This patch switches from UNLESS MARC21 to IF UNIMARC - this way changes
apply to MARC21 and NORMARC and UNIMARC remains unaffected

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 566daf8c24ad577da1b07c190979ada67877bed7)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
(cherry picked from commit 70efd64b4727adb58a5b6f54334cb622fb9d0b8f)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>