-display dbus is not currently available to win32 users, so it's not
considered a regression.

Note also the close() leak fix in case of error.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230320133643.1618437-4-marcandre.lureau@redhat.com>