[clang] Use std::optional instead of llvm::Optional (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/unittests/libclang/LibclangTest.cpp b/clang/unittests/libclang/LibclangTest.cpp
index 0845476..809426a 100644
--- a/clang/unittests/libclang/LibclangTest.cpp
+++ b/clang/unittests/libclang/LibclangTest.cpp
@@ -19,6 +19,7 @@
 #include <functional>
 #include <map>
 #include <memory>
+#include <optional>
 #include <set>
 #define DEBUG_TYPE "libclang-test"
 
@@ -934,7 +935,7 @@ void Class1::fun() {}
   ClangTU = clang_parseTranslationUnit(Index, fileName.c_str(), Args, 1,
                                        nullptr, 0, TUFlags);
 
-  llvm::Optional<CXCursor> typeRefCsr;
+  std::optional<CXCursor> typeRefCsr;
   Traverse([&](CXCursor cursor, CXCursor parent) -> CXChildVisitResult {
     if (cursor.kind == CXCursor_TypeRef) {
       typeRefCsr.emplace(cursor);