No more once_cell

Fix system audio check that didn't work because the API returns ()

src/main.rs

@@ -12,7 +12,11 @@ use std::{
     io::{BufRead, BufReader},
     path::Path,
     ptr::null_mut,
-    sync::{Arc, Mutex, mpsc::{self, Sender, Receiver}}, thread,
+    sync::{
+        mpsc::{self, Receiver, Sender},
+        Arc, Mutex,
+    },
+    thread,
 };
 
 use sm_session_notifier::SMSessionNotifier;
@@ -51,11 +55,6 @@ impl SessionMuter {
         self: &mut SessionMuter,
         session: IAudioSessionControl2,
     ) -> Result<(), Box<dyn Error>> {
-        unsafe {
-            if session.IsSystemSoundsSession().is_ok() {
-                return Ok(());
-            }
-        }
         match self.session_to_filename(&session) {
             Ok(file_name) => {
                 let fn_str = file_name.to_string_lossy().to_string();
@@ -68,9 +67,7 @@ impl SessionMuter {
                     self.sessions.push(session);
                 }
             }
-            Err(err) => {
-                println!("Unable to get filename for session {:?}", err);
-            }
+            Err(_) => {}
         }
         Ok(())
     }
@@ -136,7 +133,7 @@ fn main() {
         .boot_devices()
         .expect("failed to get initial audio devices and sessions");
 
-    let (tx, rx) : (Sender<String>, Receiver<String>) = mpsc::channel();
+    let (tx, rx): (Sender<String>, Receiver<String>) = mpsc::channel();
     *WIN_CHANGE_CHANNEL_TX.lock().unwrap().borrow_mut() = Some(tx);
 
     thread::spawn(move || {
@@ -147,5 +144,4 @@ fn main() {
         let path = rx.recv().unwrap();
         muter.lock().unwrap().notify_window_changed(&path);
     }
-
 }