[pbs-devel] [PATCH proxmox-backup] tape: fix read element status for some changers

[Dietmar Maurer]

> It seems some changers are setting the PVolTag/AVolTag flags in the
> ELEMENT STATUS page response, but don't include the actual fields then.
> To make it work with such changers, downgrade the errors to warnings, so
> we can continue to decode the remaining data.

cant we simply check if there is remaining data in the reader?