NewConnection has code block that does nothing

[joonas-fi]

go/varlink/connection.go

Lines 298 to 304 in 38f589f

	switch protocol {
	case "unix":
	break
	case "tcp":
	break
	}

This doesn't seem to do anything? Each case branch is essentially no-op (contains bare break), yet contains no default branch which could have implemented validating protocol to have valid values (unix, tcp)..

The block is confusing 🤔