llvm-project

f744cce8 - [Basic] clean up MapEntryOptionalStorage and its derived classes (NFC) (#164189)

[Basic] clean up MapEntryOptionalStorage and its derived classes (NFC) (#164189) This patch modernizes a couple of things: - Use in-class member initializers in MapEntryOptionalStorage. - Inherit constructors in OptionalStorage<clang::DirectoryEntryRef> and OptionalStorage<clang::FileEntryRef>.