Use core::future::pending instead of tokio's ^C

sfsmcd/src/main.rs

@@ -121,11 +121,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         true
     }));
 
-    // Will (afaik) be stabilized in Rust 1.48
+    // Has been stabilized in Rust 1.48
-    // core::future::pending::<()>().await;
+    core::future::pending::<()>().await;
-
+    unreachable!();
-    // Wait until SIGTERM (when systemd stops this service), then shutdown
-    tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())?.recv().await;
-    info!("Got SIGTERM, shutting down");
-    Ok(())
 }