f simplify next_pub result

Author: valentinewallace

lightning/src/ln/onion_utils.rs

@@ -82,11 +82,7 @@ pub(super) fn next_hop_packet_pubkey<T: secp256k1::Signing + secp256k1::Verifica
 		Sha256::from_engine(sha).into_inner()
 	};
 
-	if let Err(e) = packet_pubkey.mul_assign(secp_ctx, &blinding_factor[..]) {
-		Err(e)
-	} else {
-		Ok(packet_pubkey)
-	}
+	packet_pubkey.mul_assign(secp_ctx, &blinding_factor[..]).map(|_| packet_pubkey)
 }
 
 // can only fail if an intermediary hop has an invalid public key or session_priv is invalid