Extract _internal macro for new mon update handling

Finishes work over the past few commits of breaking up the
handle_new_monitor_update macro.

Author: valentinewallace

lightning/src/ln/channelmanager.rs

@@ -3684,7 +3684,7 @@ macro_rules! handle_post_close_monitor_update {
 			WithContext::from(&$self.logger, Some($counterparty_node_id), Some($channel_id), None);
 		let in_flight_updates;
 		let idx;
-		handle_new_monitor_update!(
+		handle_new_monitor_update_internal!(
 			$self,
 			$funding_txo,
 			$update,
@@ -3694,7 +3694,6 @@ macro_rules! handle_post_close_monitor_update {
 			$counterparty_node_id,
 			in_flight_updates,
 			idx,
-			_internal_outer,
 			{
 				let _ = in_flight_updates.remove(idx);
 				if in_flight_updates.is_empty() {
@@ -3731,7 +3730,7 @@ macro_rules! handle_new_monitor_update_actions_deferred {
 		let counterparty_node_id = $chan_context.get_counterparty_node_id();
 		let in_flight_updates;
 		let idx;
-		handle_new_monitor_update!(
+		handle_new_monitor_update_internal!(
 			$self,
 			$funding_txo,
 			$update,
@@ -3741,19 +3740,18 @@ macro_rules! handle_new_monitor_update_actions_deferred {
 			counterparty_node_id,
 			in_flight_updates,
 			idx,
-			_internal_outer,
 			{
 				let _ = in_flight_updates.remove(idx);
 			}
 		)
 	}};
 }
 
-macro_rules! handle_new_monitor_update {
+macro_rules! handle_new_monitor_update_internal {
 	(
 		$self: ident, $funding_txo: expr, $update: expr, $peer_state: expr, $logger: expr,
 		$chan_id: expr, $counterparty_node_id: expr, $in_flight_updates: ident, $update_idx: ident,
-		_internal_outer, $completed: expr
+		$completed: expr
 	) => {{
 		$in_flight_updates = &mut $peer_state
 			.in_flight_monitor_updates
@@ -3798,6 +3796,9 @@ macro_rules! handle_new_monitor_update {
 			false
 		}
 	}};
+}
+
+macro_rules! handle_new_monitor_update {
 	(
 		$self: ident, $funding_txo: expr, $update: expr, $peer_state_lock: expr, $peer_state: expr,
 		$per_peer_state_lock: expr, $chan: expr
@@ -3807,7 +3808,7 @@ macro_rules! handle_new_monitor_update {
 		let counterparty_node_id = $chan.context.get_counterparty_node_id();
 		let in_flight_updates;
 		let idx;
-		handle_new_monitor_update!(
+		handle_new_monitor_update_internal!(
 			$self,
 			$funding_txo,
 			$update,
@@ -3817,7 +3818,6 @@ macro_rules! handle_new_monitor_update {
 			counterparty_node_id,
 			in_flight_updates,
 			idx,
-			_internal_outer,
 			{
 				let _ = in_flight_updates.remove(idx);
 				if in_flight_updates.is_empty() && $chan.blocked_monitor_updates_pending() == 0 {