CLEANUP: turned if statement into match

kernel/src/kmain.rs

@@ -61,13 +61,16 @@ pub fn kmain(cmdline: &str, bootstrap: Option<&'static [u8]>) -> ! {
                 }
             }
 
-            let byte = sc.receive();
-            if byte == b'\r' {
+            match sc.receive() {
+                b'\r' => {
                     sc.send(b'\n');
                 }
+                byte => {
                     sc.send(byte);
                 }
             }
+        }
+    }
 }
 
 pub static DEVICE_TREE: Lazy<Mutex<DeviceTree>> = Lazy::new(|| {