Note that it's okay to pass NULL to qemuDomainDelTLSObjects in
qemuDomainAddTLSObjects as the tls-creds-x509 object was either not
created or qemu crashed.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>