fix copy_cpu_to_gpu

VectorIndexPtr

IVFSQHybrid::CopyCpuToGpu(const int64_t& device_id, const Config& config) {

    auto p = CopyCpuToGpuWithQuantizer(device_id, config);

    return p.first;

    if (auto res = FaissGpuResourceMgr::GetInstance().GetRes(device_id)) {

        ResScope rs(res, device_id, false);

        faiss::gpu::GpuClonerOptions option;

        option.allInGpu = true;

        faiss::IndexComposition index_composition;

        index_composition.index = index_.get();

        index_composition.quantizer = nullptr;

        index_composition.mode = 0;  // copy all

        auto gpu_index = faiss::gpu::index_cpu_to_gpu(res->faiss_res.get(), device_id, &index_composition, &option);

        std::shared_ptr<faiss::Index> device_index = std::shared_ptr<faiss::Index>(gpu_index);;

        auto new_idx = std::make_shared<IVFSQHybrid>(device_index, device_id, res);

        return new_idx;

    } else {

        KNOWHERE_THROW_MSG("CopyCpuToGpu Error, can't get gpu_resource");

    }

}

void