Fix clippy error in flate encoder.rs

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

Author: NobodyXu

src/codec/flate/encoder.rs

@@ -51,7 +51,7 @@ impl Encode for FlateEncoder {
         match self.encode(input, output, FlushCompress::None)? {
             Status::Ok => Ok(()),
             Status::StreamEnd => unreachable!(),
-            Status::BufError => Err(io::Error::new(io::ErrorKind::Other, "unexpected BufError")),
+            Status::BufError => Err(io::Error::other("unexpected BufError")),
         }
     }
 
@@ -100,7 +100,7 @@ impl Encode for FlateEncoder {
         )? {
             Status::Ok => Ok(false),
             Status::StreamEnd => Ok(true),
-            Status::BufError => Err(io::Error::new(io::ErrorKind::Other, "unexpected BufError")),
+            Status::BufError => Err(io::Error::other("unexpected BufError")),
         }
     }
 }