[PATCH] D119714: [clang][lex] Remove `Preprocessor::GetCurDirLookup()`

[Jan Svoboda via Phabricator via cfe-commits]

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`Preprocessor` exposes the search directory iterator via `GetCurDirLookup()` getter, which is only used in two static functions.

To simplify reasoning about search directory iterators/references and to simplify the `Preprocessor` API, this patch makes the two static functions private member functions and removes the getter entirely.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119714

Files:
  clang/include/clang/Lex/Preprocessor.h
  clang/lib/Lex/PPMacroExpansion.cpp

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