f PushFront not Insert

Author: valentinewallace

lightning/src/ln/onion_utils.rs

@@ -182,7 +182,7 @@ struct BlindedTailHopIter<'a, I: Iterator<Item = &'a BlindedHop>> {
 }
 enum PayloadCallbackAction {
 	PushBack,
-	Insert { idx: usize },
+	PushFront,
 }
 fn build_onion_payloads_callback<'a, H, B, F>(
 	hops: H, mut blinded_tail: Option<BlindedTailHopIter<'a, B>>, total_msat: u64,
@@ -265,7 +265,7 @@ where
 				amt_to_forward: value_msat,
 				outgoing_cltv_value: cltv,
 			};
-			callback(PayloadCallbackAction::Insert { idx: 0 }, payload);
+			callback(PayloadCallbackAction::PushFront, payload);
 		}
 		cur_value_msat += hop.fee_msat;
 		if cur_value_msat >= 21000000 * 100000000 * 1000 {
@@ -304,7 +304,7 @@ pub(super) fn build_onion_payloads<'a>(
 		keysend_preimage,
 		|action, payload| match action {
 			PayloadCallbackAction::PushBack => res.push(payload),
-			PayloadCallbackAction::Insert { idx } => res.insert(idx, payload),
+			PayloadCallbackAction::PushFront => res.insert(0, payload),
 		},
 	)?;
 	Ok((res, value_msat, cltv))