refactor(proto): remove redundant reference

Author: tottoto

src/proto/h1/decode.rs

@@ -637,7 +637,7 @@ impl ChunkedState {
 fn decode_trailers(buf: &mut BytesMut, count: usize) -> Result<HeaderMap, io::Error> {
     let mut trailers = HeaderMap::new();
     let mut headers = vec![httparse::EMPTY_HEADER; count];
-    let res = httparse::parse_headers(&buf, &mut headers);
+    let res = httparse::parse_headers(buf, &mut headers);
     match res {
         Ok(httparse::Status::Complete((_, headers))) => {
             for header in headers.iter() {

src/proto/h1/encode.rs

@@ -167,8 +167,8 @@ impl Encoder {
     ) -> Option<EncodedBuf<B>> {
         trace!("encoding trailers");
         match &self.kind {
-            Kind::Chunked(Some(ref allowed_trailer_fields)) => {
-                let allowed_trailer_field_map = allowed_trailer_field_map(&allowed_trailer_fields);
+            Kind::Chunked(Some(allowed_trailer_fields)) => {
+                let allowed_trailer_field_map = allowed_trailer_field_map(allowed_trailer_fields);
 
                 let mut cur_name = None;
                 let mut allowed_trailers = HeaderMap::new();