f remove unnecessary hint_candidate_contribution_msat calculation

lightning/src/routing/router.rs

@@ -1839,12 +1839,8 @@ where L::Target: Logger {
 						})
 						.unwrap_or_else(|| CandidateRouteHop::PrivateHop { hint: hop });
 
-					let used_liquidity_msat = used_channel_liquidities
-						.get(&(hop.short_channel_id, source < target)).copied().unwrap_or(0);
-					let hint_candidate_contribution_msat = cmp::min(path_value_msat,
-						candidate.effective_capacity().as_msat().saturating_sub(used_liquidity_msat));
 					if !add_entry!(candidate, source, target, aggregate_next_hops_fee_msat,
-								hint_candidate_contribution_msat, aggregate_next_hops_path_htlc_minimum_msat,
+								path_value_msat, aggregate_next_hops_path_htlc_minimum_msat,
 								aggregate_next_hops_path_penalty_msat, aggregate_next_hops_cltv_delta,
 								aggregate_next_hops_path_length) {
 						// If this hop was not used then there is no use checking the preceding
@@ -1853,6 +1849,8 @@ where L::Target: Logger {
 						hop_used = false;
 					}
 
+					let used_liquidity_msat = used_channel_liquidities
+						.get(&(hop.short_channel_id, source < target)).copied().unwrap_or(0);
 					let channel_usage = ChannelUsage {
 						amount_msat: final_value_msat + aggregate_next_hops_fee_msat,
 						inflight_htlc_msat: used_liquidity_msat,
@@ -1871,6 +1869,8 @@ where L::Target: Logger {
 						.saturating_add(1);
 
 					// Searching for a direct channel between last checked hop and first_hop_targets
+					let hint_candidate_contribution_msat = cmp::min(path_value_msat,
+						candidate.effective_capacity().as_msat().saturating_sub(used_liquidity_msat));
 					if let Some(first_channels) = first_hop_targets.get(&NodeId::from_pubkey(&prev_hop_id)) {
 						for details in first_channels {
 							let first_hop_candidate = CandidateRouteHop::FirstHop { details };