Correctly release txpool save and restore lock in case of exceptions (#7473)

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>

CHANGELOG.md

@@ -26,6 +26,7 @@
 - Fix protocol schedule check for devnets [#7429](https://github.com/hyperledger/besu/pull/7429)
 - Fix behaviour when starting in a pre-merge network [#7431](https://github.com/hyperledger/besu/pull/7431)
 - Fix tracing in precompiled contracts when halting for out of gas [#7318](https://github.com/hyperledger/besu/issues/7318)
+- Correctly release txpool save and restore lock in case of exceptions [#7473](https://github.com/hyperledger/besu/pull/7473)
 
 ## 24.7.1
 

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/TransactionPool.java

@@ -706,7 +706,8 @@ public class TransactionPool implements BlockAddedObserver {
 
             isCancelled.set(false);
             operationInProgress.set(
-                CompletableFuture.runAsync(operation).thenRun(diskAccessLock::release));
+                CompletableFuture.runAsync(operation)
+                    .whenComplete((res, err) -> diskAccessLock.release()));
             return operationInProgress.get();
           } else {
             CompletableFuture.failedFuture(