Filter resolvers to compatible address type instead of trying resolvers until a compatible address type comes out about rust-public-ip

[aWeinzierl]

Is this really the case?
The family is passed to the resolver, see:

rust-public-ip/src/lib.rs

Lines 195 to 201 in 675505f

	/// This function also protects against a resolver returning a IP address with a
	/// version that was not requested.
	pub fn resolve<'r>(resolver: impl Resolver<'r>, version: Version) -> Resolutions<'r> {
	let stream = resolver.resolve(version).and_then(move |(addr, details)| {
	// If a resolver returns a version not matching the one we requested
	// this is an error so it is skipped.
	let result = if version.matches(addr) {

It is not expected that a different family is returned, but checked still.