fix motd ownership

src/patch/patch.rs

@@ -176,7 +176,7 @@ impl ServerState for PatchServerState {
                 Box::new(vec![SendPatchPacket::RequestLogin(RequestLogin {})].into_iter().map(move |pkt| (id, pkt)))
             },
             RecvPatchPacket::LoginReply(_pkt) => {
-                let mut p = vec![SendPatchPacket::Message(Message::new(self.patch_motd.to_string()))];
+                let mut p = vec![SendPatchPacket::Message(Message::new(self.patch_motd.clone()))];
                 p.append(&mut get_file_list_packets(&self.patch_file_tree));
                 p.push(SendPatchPacket::PatchEndList(PatchEndList {}));
                 Box::new(p.into_iter().map(move |pkt| (id, pkt)))