message: Tiny simplification of TensorProto compression code.
diff: @@ -263,14 +263,13 @@ bool CompressRepeatedField(float min_compression_ratio,
  // Already compressed or invalid.
  return false;
  }
  - T prev_value = TypeHelper::GetValue(num_proto_values - 1, *tensor);
  + const T last_value = TypeHelper::GetValue(num_proto_values - 1, *tensor);
  int64 last_index = 0;
  for (int64 i = num_proto_values - 2; i >= 0 && last_index == 0; --i) {
  const T cur_value = TypeHelper::GetValue(i, *tensor);
  - if (PackedValuesNotEqual(cur_value, prev_value)) {
  + if (PackedValuesNotEqual(cur_value, last_value)) {
  last_index = i + 1;
  }
  - prev_value = cur_value;
  }
  const int64 num_truncated_proto_values = last_index + 1;
  const int64 num_bytes_as_field =
  