f expect for comment

Author: TheBlueMatt

lightning/src/ln/channelmanager.rs

@@ -8392,7 +8392,8 @@ where
 			let peer_state = &mut *peer_state_lock;
 			for (_, chan) in peer_state.channel_by_id.iter() {
 				if let Some(funding_txo) = chan.context.get_funding_txo() {
-					let monitor = args.channel_monitors.get(&funding_txo).unwrap();
+					let monitor = args.channel_monitors.get(&funding_txo)
+						.expect("We already checked for monitor presence when loading channels");
 					let mut max_in_flight_update_id = monitor.get_latest_update_id();
 					if let Some(in_flight_upds) = &mut in_flight_monitor_updates {
 						if let Some(mut chan_in_flight_upds) = in_flight_upds.remove(&(*counterparty_id, funding_txo)) {