use the make_shared replace the shared_ptr

Author: wawltor

paddle/fluid/pybind/imperative.cc

@@ -1909,10 +1909,10 @@ void BindImperative(py::module *m_ptr) {
  reinterpret_cast<void *>(data_ptr), 0);
 
  // Reset the memory with device pointer
- std::shared_ptr<memory::allocation::Allocation> holder(
- new memory::allocation::Allocation(
+ std::shared_ptr<memory::allocation::Allocation> holder =
+ std::make_shared<memory::allocation::Allocation>(
  cuda_device_pointer, need_allocate_size,
- platform::CUDAPlace(device_id)));
+ platform::CUDAPlace(device_id));
  self_tensor->ResetHolderWithType(holder, self_tensor->type());
  },
  py::arg("device_id") = 0, py::return_value_policy::reference, R"DOC(