Breaking out if channel capacity reaches max value of u64.

Author: abhik-99

lightning/src/routing/router.rs

@@ -907,10 +907,14 @@ pub fn get_route<L: Deref>(our_node_id: &PublicKey, network: &NetworkGraph, paye
 						fees: hop.fees,
 					};
 
-					let reqd_channel_cap = Some(final_value_msat.checked_add(match idx {
+					// let reqd_channel_cap = Some(final_value_msat.checked_add(match idx {
+					// 	0 => 999,
+					// 	_ => aggregate_next_hops_fee_msat.checked_add(999).unwrap_or(u64::max_value())
+					// }).unwrap_or(u64::max_value()) / 1000); // converting from msat
+					let reqd_channel_cap = if let Some (val) = final_value_msat.checked_add(match idx {
 						0 => 999,
 						_ => aggregate_next_hops_fee_msat.checked_add(999).unwrap_or(u64::max_value())
-					}).unwrap_or(u64::max_value()) / 1000); // converting from msat
+					}) { Some( val / 1000 ) } else { break; }; // converting from msat or breaking if max ~ infinity
 
 
 					// We assume that the recipient only included route hints for routes which had
@@ -944,8 +948,7 @@ pub fn get_route<L: Deref>(our_node_id: &PublicKey, network: &NetworkGraph, paye
 
 					let hop_htlc_minimum_msat_inc = compute_fees(hop_htlc_minimum_msat, hop.fees).unwrap_or(u64::max_value());
 					let hops_path_htlc_minimum = aggregate_next_hops_path_htlc_minimum_msat
-						.checked_add(hop_htlc_minimum_msat_inc)
-						.map_or(None, |inc| inc.checked_add(aggregate_next_hops_path_htlc_minimum_msat));
+						.checked_add(hop_htlc_minimum_msat_inc);
 					aggregate_next_hops_path_htlc_minimum_msat = if let Some(val) = hops_path_htlc_minimum { cmp::max(hop_htlc_minimum_msat, val) } else { break; };
 
 					if idx == route.0.len() - 1 {