[MachO] Use std::optional in ExportTrie.cpp (NFC)
authorKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 04:59:04 +0000 (20:59 -0800)
committerKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 04:59:04 +0000 (20:59 -0800)
commit59cc8fb785621c4c657c1a499a36624d9089f1ea
tree73ee31f34ac741aafb3d91424a9f1e1a918cad57
parentdedb16567c2fc46cf5ec167737a47000413fd873
[MachO] Use std::optional in ExportTrie.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
lld/MachO/ExportTrie.cpp