Hold on-chain rebalance mutex guard

Author: benthecarman

graduated-rebalancer/Cargo.toml

@@ -10,4 +10,4 @@ license = "MIT OR Apache-2.0"
 bitcoin-payment-instructions = { workspace = true }
 lightning = { workspace = true }
 lightning-invoice = { workspace = true }
-tokio = { version = "1", default-features = false }
+tokio = { version = "1", default-features = false, features = ["sync"] }

graduated-rebalancer/src/lib.rs

@@ -341,7 +341,7 @@ where
 
 	/// Perform on-chain to lightning rebalance by opening a channel or splicing into an existing one
 	async fn do_onchain_rebalance(&self, params: TriggerParams) {
-		let _ = self.balance_mutex.lock().await;
+		let _lock = self.balance_mutex.lock().await;
 
 		let (channel_outpoint, user_channel_id) = if self.ln_wallet.has_channel_with_lsp() {
 			log_info!(self.logger, "Splicing into channel with LSP with on-chain funds");