message: refactor(http): adjust socket eof debug log
diff: @@ -97,7 +97,7 @@ impl<I: Io, T: Http1Transaction, K: KeepAlive> Conn<I, T, K> {
  other => Err(io::Error::new(io::ErrorKind::UnexpectedEof, other)),
  }
  } else {
  - debug!("socket read eof");
  + debug!("socket complete");
  Ok(Async::Ready(None))
  }
  };
  