Fix perl errors in installer modules.

The equivalent of C break is Perl last; guess these are typos.

Change-Id: I1d61d319f2add029434ab5da7d9c01c7e807e8ac
Reviewed-on: https://gerrit.libreoffice.org/7188
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>