qemu_snapshot: refactor qemuSnapshotDeleteExternalPrepare

When user creates external snapshot with making only memory snapshot
without any disks deleting that snapshot failed without reporting any
meaningful error.

The issue is that the qemuSnapshotDeleteExternalPrepare function
returns NULL because the returned list is empty. This will not change
so to make it clear if the function fails or not return int instead and
have another parameter where we can pass the list.

With the fixed memory snapshot deletion it will now correctly delete
memory only snapshot as well.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2170826

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

0 files changed, 0 insertions, 0 deletions