Fix build with llvm-15
https://github.com/KDE/clazy/commit/20fca52da739ebefa47e35f6b338bb99a0da3cfe

Index: src/PreProcessorVisitor.h
--- src/PreProcessorVisitor.h.orig
+++ src/PreProcessorVisitor.h
@@ -71,7 +71,7 @@ class PreProcessorVisitor (protected)
                       clang::SourceRange range, const clang::MacroArgs *) override;
     void InclusionDirective (clang::SourceLocation HashLoc, const clang::Token &IncludeTok,
                              clang::StringRef FileName, bool IsAngled, clang::CharSourceRange FilenameRange,
-                             const clang::FileEntry *File, clang::StringRef SearchPath, clang::StringRef RelativePath,
+                             clazy::OptionalFileEntryRef File, clang::StringRef SearchPath, clang::StringRef RelativePath,
                              const clang::Module *Imported, clang::SrcMgr::CharacteristicKind FileType) override;
 private:
     std::string getTokenSpelling(const clang::MacroDefinition &) const;