util: remove ndn::optional, use std::optional directly
Change-Id: I503e8f250e80e0ff7708070effc2e84e3b38b3b7
diff --git a/tests/unit/security/validator-fixture.hpp b/tests/unit/security/validator-fixture.hpp
index d8d357f..7e1e0b5 100644
--- a/tests/unit/security/validator-fixture.hpp
+++ b/tests/unit/security/validator-fixture.hpp
@@ -1,6 +1,6 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
- * Copyright (c) 2013-2022 Regents of the University of California.
+ * Copyright (c) 2013-2023 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
@@ -158,7 +158,7 @@
private:
void
- verifyOriginalPacket(const optional<Certificate>&) override
+ verifyOriginalPacket(const std::optional<Certificate>&) override
{
// do nothing
}