Signal handling works only once

[khvzak]

Imagine the following code:

#[ntex::main]
async fn main() {
    // Srv1
    ntex::web::HttpServer::new(|| ntex::web::App::new())
        .bind("0.0.0.0:8081")
        .unwrap()
        .run()
        .await
        .unwrap();

    // Srv2
    ntex::web::HttpServer::new(|| ntex::web::App::new())
        .bind("0.0.0.0:8081")
        .unwrap()
        .run()
        .await
        .unwrap();
}

The first server can be stopped just fine by pressing ctrl-c/sending signal, but the next one would ignore the same signal and never stop.

[fafhrd91]

fixed in master