Some general code cleanup

server/src/VirtualServerManager.cpp

@@ -412,7 +412,7 @@ bool VirtualServerManager::deleteServer(shared_ptr<VirtualServer> server) {
         }
     }
     {
-        threads::MutexLock locK(server->stateLock);
+        std::unique_lock state_lock{server->state_mutex};
         server->state = ServerState::DELETING;
     }