Fixes

Author: taavit

src/decoder.rs

@@ -595,7 +595,7 @@ impl<R: Read> Decoder<R> {
         }
 
         let frame = self.frame.as_ref().unwrap();
-        let preference = Self::select_worker(&frame, PreferWorkerKind::Multithreaded);
+        let preference = Self::select_worker(frame, PreferWorkerKind::Multithreaded);
 
         worker_scope.get_or_init_worker(preference, |worker| {
             self.decode_planes(worker, planes, planes_u16)

src/worker/multithreaded.rs

@@ -32,7 +32,7 @@ impl MpscWorker {
     ) -> Result<()> {
         // if there is no worker thread for this component yet, start one
         let component = row_data.index;
-        if let None = self.senders[component] {
+        if self.senders[component].is_none() {
             let sender = spawn_worker(component)?;
             self.senders[component] = Some(sender);
         }