sw: fail loading when the fallback text detection fails

When we document in question fails to match any known type,
we try to open as plain text (and convert to a Writer doc).
However we should not display non-text when we have failed
to detect ascii or unicode contents in the file.

This happens with corrupted documents, for example, where
we end up displaying non-printable binary data.

Change-Id: Iccc158a4cb6051a8b17ba01987a30a9882a27fa9
Reviewed-on: https://gerrit.libreoffice.org/75512
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Jan Holesovsky <kendy@collabora.com>
(cherry picked from commit d1f6f27e2a014aa55e2762f1209dc520fb183404)
Reviewed-on: https://gerrit.libreoffice.org/75625
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>

0 files changed, 0 insertions, 0 deletions