Merge #15345: net: Correct comparison of addr count

Summary:
107623c26c2113428446effaa24edb986a3e780c net: Correct comparison of addr count (Carl Dong)

Pull request description:

`LOCAL_NONE` is supposed to be an enum indicating the `nScore` of a
`LocalServiceInfo` rather than the count of an addr in `mapLocalHost`.

Tree-SHA512: a47a0859dd11c991d75b54e96b08c502e3d235f7a6522a2355053f377d05e7853483996919292f458d917a561b23951e6945d6bf0ff5a2f29513c477c640bdd2

Backport of Core PR15345

Test Plan: ninja check for sanity

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D6301