message: fix a clippy warning
diff: @@ -270,7 +270,7 @@ impl EnvBackend for EnvInstance {
  enc_input,
  &mut &mut output[..],
  ))?;
  - let decoded = decode_to_result(&mut &output[..])?;
  + let decoded = decode_to_result(&output[..])?;
  Ok(decoded)
  }
  }
  