message: Rename defaultDiagnosticLoc to bufferIndirectlyCausingDiagnostic
diff: @@ -2727,13 +2727,13 @@ public:
  m_ast_context.GetDiagnosticEngine().takeConsumers();
  }
  - virtual void handleDiagnostic(swift::SourceManager &source_mgr,
  - swift::SourceLoc source_loc,
  - swift::DiagnosticKind kind,
  + virtual void
  + handleDiagnostic(swift::SourceManager &source_mgr,
  + swift::SourceLoc source_loc, swift::DiagnosticKind kind,
  llvm::StringRef formatString,
  llvm::ArrayRef<swift::DiagnosticArgument> formatArgs,
  const swift::DiagnosticInfo &info,
  - const SourceLoc defaultDiagnosticLoc) {
  + const SourceLoc bufferIndirectlyCausingDiagnostic) {
  llvm::StringRef bufferName = "<anonymous>";
  unsigned bufferID = 0;
  std::pair<unsigned, unsigned> line_col = {0, 0};
  