fixup! fixup! add the bolt12 invoice to the PaymentSend event

Signed-off-by: Vincenzo Palazzo <[email protected]>

Author: vincenzopalazzo

lightning/src/ln/functional_test_utils.rs

@@ -2307,8 +2307,7 @@ pub fn expect_payment_sent<CM: AChannelManager, H: NodeHolder<CM=CM>>(node: &H,
 		check_added_monitors(node, 1);
 	}
 	// We return the invoice because some test may want to check the invoice details.
-	#[allow(unused_assignments)]
-	let mut invoice = None;
+	let invoice;
 	let expected_payment_id = match events[0] {
 		Event::PaymentSent { ref payment_id, ref payment_preimage, ref payment_hash, ref amount_msat, ref fee_paid_msat, ref bolt12_invoice } => {
 			assert_eq!(expected_payment_preimage, *payment_preimage);