Auto merge of #250 - amikhalev:HostAndPort-derive-Clone, r=SimonSapin
Auto merge of #250 - amikhalev:HostAndPort-derive-Clone, r=SimonSapin

Added #[derive(Clone)] for HostAndPort

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cGuille/rust-url,servo/rust-url,servo/rust-url,cGuille/rust-url