force_correct incorrectly assumes port 443

[shutton]

If a provided URL is http rather than https, this bit of code will accidentally set the outgoing port to 443 without checking the scheme if force_connect is enabled

            if uri.scheme() == Some(&httpur::i::Scheme::HTTPS) || p.force_connect {
                let host = host.to_owned();
                let port = uri.port_u16().unwrap_or(443);