Fix cargo clippy

Signed-off-by: Gris Ge <[email protected]>

Author: cathay4t

src/done.rs

@@ -114,9 +114,10 @@ mod tests {
 
     #[test]
     fn serialize_and_parse() {
-        let mut expected = DoneMessage::default();
-        expected.code = 5;
-        expected.extended_ack = vec![1, 2, 3];
+        let expected = DoneMessage {
+            code: 5,
+            extended_ack: vec![1, 2, 3],
+        };
 
         let len = expected.buffer_len();
         assert_eq!(len, size_of::<i32>() + expected.extended_ack.len());

src/message.rs

@@ -212,9 +212,10 @@ mod tests {
     #[test]
     fn test_done() {
         let header = NetlinkHeader::default();
-        let mut done_msg = DoneMessage::default();
-        done_msg.code = 0;
-        done_msg.extended_ack = vec![6, 7, 8, 9];
+        let done_msg = DoneMessage {
+            code: 0,
+            extended_ack: vec![6, 7, 8, 9],
+        };
         let mut want = NetlinkMessage::new(
             header,
             NetlinkPayload::<FakeNetlinkInnerMessage>::Done(done_msg.clone()),