Fix clippy warnings so that CI passes again

src/server/decode.rs

@@ -127,7 +127,7 @@ where
         let reader = ReadNotifier::new(reader, body_read_sender);
         let reader = BufReader::new(reader);
         req.set_body(Body::from_reader(reader, None));
-        return Ok(Some((req, BodyReader::Chunked(reader_clone))));
+        Ok(Some((req, BodyReader::Chunked(reader_clone))))
     } else if let Some(len) = content_length {
         let len = len.len();
         let reader = Arc::new(Mutex::new(reader.take(len)));

src/server/mod.rs

@@ -170,7 +170,7 @@ where
 
         if let Some(upgrade_sender) = upgrade_sender {
             upgrade_sender.send(Connection::new(self.io.clone())).await;
-            return Ok(ConnectionStatus::Close);
+            Ok(ConnectionStatus::Close)
         } else if close_connection {
             Ok(ConnectionStatus::Close)
         } else {

tests/client_decode.rs

@@ -26,7 +26,7 @@ mod client_decode {
         ])
         .await?;
 
-        assert_eq!(res.header(&headers::DATE).is_some(), true);
+        assert!(res.header(&headers::DATE).is_some());
         Ok(())
     }