Load coSWID metadata from a uSWID MTD block device
Load coSWID metadata from a uSWID MTD block device

The coSWID is a child of the parent, and the parent container does not have a
version. Also fix a small memory leak when parsing container formats.

Fixes https://github.com/fwupd/fwupd/issues/4294

fwupd/fwupd,fwupd/fwupd,fwupd/fwupd,fwupd/fwupd