Add cltv_expiry to HTLCPreviousHopData

This is needed in order to fail back an inbound HTLC before our upstream
counterparty goes to claim on-chain, which will be added in an upcoming
commit.

Author: alecchendev

lightning/src/ln/channelmanager.rs

@@ -4873,6 +4873,7 @@ where
 			},
 			HTLCSource::PreviousHopData(HTLCPreviousHopData { ref short_channel_id, ref htlc_id, ref incoming_packet_shared_secret, ref phantom_shared_secret, ref outpoint, .. }) => {
 				log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with {:?}", &payment_hash, onion_error);
+				log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with {:?}", log_bytes!(payment_hash.0), onion_error);
 				let err_packet = onion_error.get_encrypted_failure_packet(incoming_packet_shared_secret, phantom_shared_secret);
 
 				let mut push_forward_ev = false;