message: fix build against latest llvm
diff: @@ -291,7 +291,7 @@ static void optimizeModule(llvm::Module *M) {
  llvm::FunctionPassManager FPM =
  PB.buildFunctionSimplificationPipeline(
  - llvm::PassBuilder::OptimizationLevel::O2, llvm::ThinOrFullLTOPhase::None);
  + llvm::PassBuilder::OptimizationLevel::O2, llvm::PassBuilder::ThinLTOPhase::None);
  llvm::ModulePassManager MPM;
  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
  MPM.run(*M, MAM);
  