[MCParser] Use std::optional in MasmParser.cpp (NFC)
authorKazu Hirata <kazu@google.com>
Fri, 25 Nov 2022 20:20:51 +0000 (12:20 -0800)
committerKazu Hirata <kazu@google.com>
Fri, 25 Nov 2022 20:20:51 +0000 (12:20 -0800)
commit2887f924aff04120167c71c0bf185bfa8db0cb35
treeae1d249b4035f1df07ef47f8ddc918e1e7d6c3ec
parente8a60b75d7e8f33ca113caf9efa29dc305b64017
[MCParser] Use std::optional in MasmParser.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/lib/MC/MCParser/MasmParser.cpp