src: main: Remove redundant closure call

src/main.rs

@@ -50,7 +50,7 @@ async fn main() -> anyhow::Result<()> {
     // it holds a tuple with an HTML message and a list of rooms to post to
     let (bcast_tx, bcast_rx) = broadcast::channel::<(String, Vec<String>)>(1024);
 
-    let handle: JoinHandle<_> = (|| {
+    let handle: JoinHandle<_> = {
         let matrix_ready = Arc::clone(&matrix_ready);
         let config = Arc::clone(&config);
 
@@ -72,7 +72,7 @@ async fn main() -> anyhow::Result<()> {
                 ()
             }).await.unwrap(); //XXX: Panic if the mqtt broker fails
         })
-    })();
+    };
 
     login_and_sync(
         config.homeserver_uri.clone().into(),