f cfg-gate set_dual_fund_optional()

lightning/src/ln/channelmanager.rs

@@ -11366,6 +11366,7 @@ pub fn provided_init_features(config: &UserConfig) -> InitFeatures {
 	if config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx {
 		features.set_anchors_zero_fee_htlc_tx_optional();
 	}
+	#[cfg(any(dual_funding, splicing))]
 	features.set_dual_fund_optional();
 	features
 }