[llvm-dwp] Use std::optional in llvm-dwp.cpp (NFC)
authorKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 02:49:27 +0000 (18:49 -0800)
committerKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 02:49:27 +0000 (18:49 -0800)
commit170666eb4abc58f77da363fcd3688bd128fa5fae
tree355983b58fd89df879aea50cc99066cff6f1c02f
parenta7afa37fb2010b191cce3da867740e34a9decda6
[llvm-dwp] Use std::optional in llvm-dwp.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
llvm/tools/llvm-dwp/llvm-dwp.cpp