Patch has been upstreamed with
https://ssl.icu-project.org/trac/ticket/12504

Change-Id: I1f3ddad87a2a6568ced3f9d2b2df3e0af0ee18aa
Reviewed-on: https://gerrit.libreoffice.org/24117Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Martin Hosken <martin_hosken@sil.org>
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>