optim: mark a few classes final

4 files changed, 4 insertions, 4 deletions

diff --git a/src/httpserver.cpp b/src/httpserver.cpp
index 290a2efca..f37b28f71 100644
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -40,7 +40,7 @@
 static const size_t MAX_HEADERS_SIZE = 8192;
 
 /** HTTP request work item */
-class HTTPWorkItem : public HTTPClosure
+class HTTPWorkItem final : public HTTPClosure
 {
 public:
     HTTPWorkItem(std::unique_ptr<HTTPRequest> _req, const std::string &_path, const HTTPRequestHandler& _func):
diff --git a/src/txdb.h b/src/txdb.h
index adcbc7338..385e3ea91 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -64,7 +64,7 @@ struct CDiskTxPos : public CDiskBlockPos
 };
 
 /** CCoinsView backed by the coin database (chainstate/) */
-class CCoinsViewDB : public CCoinsView
+class CCoinsViewDB final : public CCoinsView
 {
 protected:
     CDBWrapper db;
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 06937566b..9901f5f8c 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -648,7 +648,7 @@ private:
  * A CWallet is an extension of a keystore, which also maintains a set of transactions and balances,
  * and provides the ability to create new transactions.
  */
-class CWallet : public CCryptoKeyStore, public CValidationInterface
+class CWallet final : public CCryptoKeyStore, public CValidationInterface
 {
 private:
     static std::atomic<bool> fFlushScheduled;
diff --git a/src/zmq/zmqnotificationinterface.h b/src/zmq/zmqnotificationinterface.h
index eec6f7bc6..cb92216fa 100644
--- a/src/zmq/zmqnotificationinterface.h
+++ b/src/zmq/zmqnotificationinterface.h
@@ -13,7 +13,7 @@
 class CBlockIndex;
 class CZMQAbstractNotifier;
 
-class CZMQNotificationInterface : public CValidationInterface
+class CZMQNotificationInterface final : public CValidationInterface
 {
 public:
     virtual ~CZMQNotificationInterface();