fdo#39468 Translate German Comments - vcl/source/window/seleng.cxx

Change-Id: Ib6466fe275eccb707ae6edbdf430080d92973b1d
Reviewed-on: https://gerrit.libreoffice.org/8429
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>