f fix test case

Author: TheBlueMatt

lightning/src/routing/router.rs

@@ -2128,6 +2128,8 @@ where L::Target: Logger {
 		.map(|(_, path)| {
 			match &path.introduction_node {
 				IntroductionNode::NodeId(pubkey) => {
+					// Note that this will only return `Some` if the `pubkey` is somehow known to
+					// us (i.e. a channel counterparty or in the network graph).
 					node_counters.node_counter_from_id(&NodeId::from_pubkey(&pubkey))
 				},
 				IntroductionNode::DirectedShortChannelId(direction, scid) => {
@@ -7710,7 +7712,7 @@ mod tests {
 		};
 
 		let mut invalid_blinded_path_2 = invalid_blinded_path.clone();
-		invalid_blinded_path_2.introduction_node = IntroductionNode::NodeId(ln_test_utils::pubkey(45));
+		invalid_blinded_path_2.introduction_node = IntroductionNode::NodeId(nodes[3]);
 		let payment_params = PaymentParameters::blinded(vec![
 			(blinded_payinfo.clone(), invalid_blinded_path.clone()),
 			(blinded_payinfo.clone(), invalid_blinded_path_2)]);