message: fix(http1): fix server misinterpretting multiple Transfer-Encoding headers
  When a request arrived with multiple `Transfer-Encoding` headers, hyper
  would check each if they ended with `chunked`. It should have only
  checked if the *last* header ended with `chunked`.
  See
diff: @@ -213,6 +213,8 @@ impl Http1Transaction for Server {
  if headers::is_chunked_(&value) {
  is_te_chunked = true;
  decoder = DecodedLength::CHUNKED;
  + } else {
  + is_te_chunked = false;
  }
  }
  header::CONTENT_LENGTH => {
  @@ -1444,6 +1446,16 @@ mod tests {
  "transfer-encoding doesn't end in chunked",
  );
  + parse_err(
  + "\
  + POST / HTTP/1.1\r\n\
  + transfer-encoding: chunked\r\n\
  + transfer-encoding: afterlol\r\n\
  + \r\n\
  + ",
  + "transfer-encoding multiple lines doesn't end in chunked",
  + );
  +
  // http/1.0
  assert_eq!(
  