f make their_funding_satoshis an Option<u64>

Author: dunxen

lightning/src/ln/channel.rs

@@ -3825,7 +3825,7 @@ pub(super) struct DualFundingChannelContext {
 	/// The amount in satoshis we will be contributing to the channel.
 	pub our_funding_satoshis: u64,
 	/// The amount in satoshis our counterparty will be contributing to the channel.
-	pub their_funding_satoshis: u64,
+	pub their_funding_satoshis: Option<u64>,
 	/// The funding transaction locktime suggested by the initiator. If set by us, it is always set
 	/// to the current block height to align incentives against fee-sniping.
 	pub funding_tx_locktime: LockTime,
@@ -8412,7 +8412,7 @@ impl<SP: Deref> OutboundV2Channel<SP> where SP::Target: SignerProvider {
 			unfunded_context: UnfundedChannelContext { unfunded_channel_age_ticks: 0 },
 			dual_funding_context: DualFundingChannelContext {
 				our_funding_satoshis: funding_satoshis,
-				their_funding_satoshis: 0,
+				their_funding_satoshis: None,
 				funding_tx_locktime,
 				funding_feerate_sat_per_1000_weight,
 				our_funding_inputs: funding_inputs,
@@ -8518,7 +8518,7 @@ impl<SP: Deref> OutboundV2Channel<SP> where SP::Target: SignerProvider {
 		// Now we can generate the `channel_id` since we have our counterparty's `revocation_basepoint`.
 		self.context.channel_id = ChannelId::v2_from_revocation_basepoints(
 			&self.context.get_holder_pubkeys().revocation_basepoint, &RevocationBasepoint::from(msg.common_fields.revocation_basepoint));
-		self.dual_funding_context.their_funding_satoshis = msg.funding_satoshis;
+		self.dual_funding_context.their_funding_satoshis = Some(msg.funding_satoshis);
 		self.context.do_accept_channel_checks(
 			default_limits, their_features, &msg.common_fields, get_v2_channel_reserve_satoshis(
 				msg.common_fields.dust_limit_satoshis, self.context.channel_value_satoshis))
@@ -8611,7 +8611,7 @@ impl<SP: Deref> InboundV2Channel<SP> where SP::Target: SignerProvider {
 			unfunded_context: UnfundedChannelContext { unfunded_channel_age_ticks: 0 },
 			dual_funding_context: DualFundingChannelContext {
 				our_funding_satoshis: funding_satoshis,
-				their_funding_satoshis: msg.common_fields.funding_satoshis,
+				their_funding_satoshis: Some(msg.common_fields.funding_satoshis),
 				funding_tx_locktime: LockTime::from_consensus(msg.locktime),
 				funding_feerate_sat_per_1000_weight: msg.funding_feerate_sat_per_1000_weight,
 				our_funding_inputs: funding_inputs,