bin confusing comment

Change-Id: Idedad17ed2c89613a3f5caeea39f5c47c9856114
Reviewed-on: https://gerrit.libreoffice.org/12516
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>