and reopen them when we need their data. That way we don't have as many open files as substreams in the package, so we don't run out of file handles Change-Id: Ic124e275abf15f4578c77ee271d185f40cb844b1 Reviewed-on: https://gerrit.libreoffice.org/17289 Reviewed-by: Caolán McNamara <caolanm@redhat.com> Tested-by: Caolán McNamara <caolanm@redhat.com>