lndconnect prints unneeded config warning

[erikarvstedt]

When directly providing the cert and macaroon paths for generating a URL, lndconnect correctly generates the URL, but prints an unneeded config warning: open /root/.lnd/lnd.conf: no such file or directory.

Reproduce

lndconnect --host=myhost --port=8080 --tlscertpath=/path/to/cert --adminmacaroonpath=/path/to/macaroon --url

Output:

open /root/.lnd/lnd.conf: no such file or directory
lndconnect://foo:8080?cert=...

Workaround

Add --configfile=/dev/null to the command:

lndconnect --host=myhost --port=8080 --tlscertpath=/path/to/cert --adminmacaroonpath=/path/to/macaroon --configfile=/dev/null --url