message: Check tensor exists
  Summary:
  Ref  T22957
  Reviewers: jakeh, #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved
  Maniphest Tasks: T22957
diff: @@ -1245,7 +1245,7 @@ Status InplaceDeferredVisitor::HandleParameterTensor(
  reallocate_inputs_info_[param_num]
  [input_location.flattened_output_tuple_index];
  - if (callsite_tensor->IsRemoteBuffer()) {
  + if (callsite_tensor && callsite_tensor->IsRemoteBuffer()) {
  // Add the remote buffer to the computation inputs.
  computation_inputs_[param_num]
  [input_location.flattened_output_tuple_index] =
  