message: Clarify comment and variable names. (NFC)
diff: @@ -142,12 +142,14 @@ TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) {
  if (!dwo_module_sp)
  return TypeSP();
  - // This type comes from an external DWO module.
  - std::vector<CompilerContext> dwo_context;
  - die.GetDeclContext(dwo_context);
  + // If this type comes from a Clang module, look in the DWARF section
  + // of the pcm file in the module cache. Clang generates DWO skeleton
  + // units as breadcrumbs to find them.
  + std::vector<CompilerContext> decl_context;
  + die.GetDeclContext(decl_context);
  TypeMap dwo_types;
  - if (!dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true,
  + if (!dwo_module_sp->GetSymbolVendor()->FindTypes(decl_context, true,
  dwo_types)) {
  if (!isClangModuleFwdDecl(die))
  return TypeSP();
  @@ -159,7 +161,7 @@ TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) {
  if (!NameModule.second)
  continue;
  SymbolVendor *SymVendor = NameModule.second->GetSymbolVendor();
  - if (SymVendor->FindTypes(dwo_context, true, dwo_types))
  + if (SymVendor->FindTypes(decl_context, true, dwo_types))
  break;
  }
  }
  