[AST] Use std::optional in ASTImporter.cpp (NFC)
authorKazu Hirata <kazu@google.com>
Sat, 10 Dec 2022 06:17:46 +0000 (22:17 -0800)
committerKazu Hirata <kazu@google.com>
Sat, 10 Dec 2022 06:17:46 +0000 (22:17 -0800)
commit17d779be76d9597fe13478392b266543761fedca
treeb80f08175ee4bb3701fc947d8df7617972236f44
parent048612050a2fc0a89b84632a48da0d86f0d13646
[AST] Use std::optional in ASTImporter.cpp (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
clang/lib/AST/ASTImporter.cpp