Use qemu_strtosz() instead of qemu_strtosz_MiB() where it doesn't
really make a difference.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Message-Id: <1487708048-2131-19-git-send-email-armbru@redhat.com>