Remove remaining casts

cast-client/src/task.rs

@@ -19,10 +19,10 @@ pub fn keepalive(
     Interval::new_interval(Duration::new(5, 0))
         .cancel(valve)
         .map(|_| Command::Ping)
-        .or_else(|err| {
+        .or_else(|err| -> Result<Command, ()> {
             warn!("Error on heartbeat interval: {:?}", err);
             // Attempt to recover from errors on the heartbeat channel
-            Ok(Command::Ping) as Result<Command, ()>
+            Ok(Command::Ping)
         })
         .forward(command.sink_map_err(|err| warn!("Error on sink heartbeat: {:?}", err)))
         .map(|_| ())

punchtop-playlist/src/fs/mod.rs

@@ -161,7 +161,7 @@ impl punchtop_audio::Track for Track {
 
     fn stream(&self) -> Option<Box<dyn Read>> {
         let file = File::open(&self.path).ok()?;
-        Some(Box::new(file) as Box<dyn Read>)
+        Some(Box::new(file))
     }
 
     fn content_type(&self) -> String {