f simln-lib/feat: report payments to sim_node scorer

This commit handles the case where a payment_hash being tracked does not have a payment path associated with it, meaning the payment was not dispatched and scorer should not be updated

Author: chuksys

simln-lib/src/sim_node.rs

@@ -751,10 +751,17 @@ impl<T: SimNetwork, C: Clock> LightningNode for SimNode<T, C> {
                         let track_result = res.map_err(|e| LightningError::TrackPaymentError(format!("channel receive err: {}", e)))?;
                         if let Ok(ref payment_result) = track_result {
                             let duration = self.clock.now().duration_since(UNIX_EPOCH)?;
-                            if payment_result.payment_outcome == PaymentOutcome::Success {
-                                self.scorer.lock().await.payment_path_successful(&in_flight.path, duration);
-                            } else if let PaymentOutcome::IndexFailure(index) = payment_result.payment_outcome {
-                                    self.scorer.lock().await.payment_path_failed(&in_flight.path, index.try_into().unwrap(), duration);
+                            match &in_flight.path {
+                                Some(path) => {
+                                    if payment_result.payment_outcome == PaymentOutcome::Success {
+                                        self.scorer.lock().await.payment_path_successful(path, duration);
+                                    } else if let PaymentOutcome::IndexFailure(index) = payment_result.payment_outcome {
+                                        self.scorer.lock().await.payment_path_failed(path, index.try_into().unwrap(), duration);
+                                    }
+                                },
+                                None => {
+                                    log::warn!("No path found for payment hash {}, cannot update scorer.", hex::encode(hash.0));
+                                }
                             }
                         }
                         track_result