Method cleanup

tutorials/verify/verify.cpp:5914–5920

    }

    virtual void cleanup(VerifyApplication* state) 
    {
      AssertNoError(device);
      scene = nullptr;
      device = nullptr;
      ParallelIntersectBenchmark::cleanup(state);
    }
  };

  struct IncoherentRaysBenchmark : public ParallelIntersectBenchmark