message: rustfmt the return
diff: @@ -700,11 +700,9 @@ impl TryFrom<&SignatureAPI> for signature::Signature {
  match sig.sig_type {
  2 => (Ok(signature::Signature::new_bls(sig.data.to_vec()))),
  1 => (Ok(signature::Signature::new_secp256k1(sig.data.to_vec()))),
  - _ => {
  - Err(SignerError::GenericString(
  + _ => Err(SignerError::GenericString(
  "Unknown signature type.".to_string(),
  - ))
  - }
  + )),
  }
  }
  }
  