Fix clippy error in tokio generic encoder.rs

Signed-off-by: Jiahao XU <[email protected]>

Author: NobodyXu

src/tokio/write/generic/encoder.rs

@@ -96,8 +96,7 @@ impl<W: AsyncWrite, E: Encode> Encoder<W, E> {
                 },
 
                 State::Finishing | State::Done => {
-                    return Poll::Ready(Err(io::Error::new(
-                        io::ErrorKind::Other,
+                    return Poll::Ready(Err(io::Error::other(
                         "Write after shutdown",
                     )))
                 }
@@ -123,8 +122,7 @@ impl<W: AsyncWrite, E: Encode> Encoder<W, E> {
                 State::Encoding | State::Flushing => this.encoder.flush(&mut output)?,
 
                 State::Finishing | State::Done => {
-                    return Poll::Ready(Err(io::Error::new(
-                        io::ErrorKind::Other,
+                    return Poll::Ready(Err(io::Error::other(
                         "Flush after shutdown",
                     )))
                 }