ofs: if `Transport.connect` fails, call `disconnect`
ofs: if `Transport.connect` fails, call `disconnect`

If we fail while setting up our watches, disconnect the transport
before failing the thread.

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@docker.com>

djs55/vpnkit,djs55/vpnkit,djs55/vpnkit,samoht/vpnkit