Fix lightning-background-processor warnings.

Version 0.32.2 of `rust-bitcoin` deprecates a number of methods that
are commonly used in this project, most visibly `txid()`, which is
now called `compute_txid()`. This resulted in a lot of warnings, and
this commit is part of a series that seeks to address that.

Author: arik-so

lightning-background-processor/src/lib.rs

@@ -1866,7 +1866,10 @@ mod tests {
 		nodes[0]
 			.node
 			.force_close_broadcasting_latest_txn(
-				&ChannelId::v1_from_funding_outpoint(OutPoint { txid: tx.txid(), index: 0 }),
+				&ChannelId::v1_from_funding_outpoint(OutPoint {
+					txid: tx.compute_txid(),
+					index: 0,
+				}),
 				&nodes[1].node.get_our_node_id(),
 				error_message.to_string(),
 			)
@@ -2134,7 +2137,7 @@ mod tests {
 			get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, node_0_id);
 		let broadcast_funding =
 			nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().pop().unwrap();
-		assert_eq!(broadcast_funding.txid(), funding_tx.txid());
+		assert_eq!(broadcast_funding.compute_txid(), funding_tx.compute_txid());
 		assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
 
 		if !std::thread::panicking() {
@@ -2212,7 +2215,7 @@ mod tests {
 		let sweep_tx_0 = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().pop().unwrap();
 		match tracked_output.status {
 			OutputSpendStatus::PendingFirstConfirmation { latest_spending_tx, .. } => {
-				assert_eq!(sweep_tx_0.txid(), latest_spending_tx.txid());
+				assert_eq!(sweep_tx_0.compute_txid(), latest_spending_tx.compute_txid());
 			},
 			_ => panic!("Unexpected status"),
 		}
@@ -2224,7 +2227,7 @@ mod tests {
 		let sweep_tx_1 = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().pop().unwrap();
 		match tracked_output.status {
 			OutputSpendStatus::PendingFirstConfirmation { latest_spending_tx, .. } => {
-				assert_eq!(sweep_tx_1.txid(), latest_spending_tx.txid());
+				assert_eq!(sweep_tx_1.compute_txid(), latest_spending_tx.compute_txid());
 			},
 			_ => panic!("Unexpected status"),
 		}
@@ -2236,7 +2239,7 @@ mod tests {
 		let sweep_tx_2 = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().pop().unwrap();
 		match tracked_output.status {
 			OutputSpendStatus::PendingFirstConfirmation { latest_spending_tx, .. } => {
-				assert_eq!(sweep_tx_2.txid(), latest_spending_tx.txid());
+				assert_eq!(sweep_tx_2.compute_txid(), latest_spending_tx.compute_txid());
 			},
 			_ => panic!("Unexpected status"),
 		}
@@ -2249,7 +2252,7 @@ mod tests {
 		let tracked_output = nodes[0].sweeper.tracked_spendable_outputs().first().unwrap().clone();
 		match tracked_output.status {
 			OutputSpendStatus::PendingThresholdConfirmations { latest_spending_tx, .. } => {
-				assert_eq!(sweep_tx_2.txid(), latest_spending_tx.txid());
+				assert_eq!(sweep_tx_2.compute_txid(), latest_spending_tx.compute_txid());
 			},
 			_ => panic!("Unexpected status"),
 		}
@@ -2264,7 +2267,7 @@ mod tests {
 		let tracked_output = nodes[0].sweeper.tracked_spendable_outputs().first().unwrap().clone();
 		match tracked_output.status {
 			OutputSpendStatus::PendingThresholdConfirmations { latest_spending_tx, .. } => {
-				assert_eq!(sweep_tx_2.txid(), latest_spending_tx.txid());
+				assert_eq!(sweep_tx_2.compute_txid(), latest_spending_tx.compute_txid());
 			},
 			_ => panic!("Unexpected status"),
 		}