if let Ok(invoice) = build_response(&refund, pubkey, &secp_ctx) {
invoice
- .sign::<_, Infallible>(
- |message| Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &keys))
- )
+ .sign(|message: &UnsignedBolt12Invoice| -> Result<_, Infallible> {
+ Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &keys))
+ })
.unwrap()
.write(&mut buffer)
.unwrap();