message: AppVeyor error
diff: @@ -61,10 +61,10 @@ void BP3Writer::PutDeferredCommon(Variable<T> &variable, const T *data)
  variable.SetBlockInfo(data, CurrentStep());
  m_BP3Serializer.m_DeferredVariables.insert(variable.m_Name);
  m_BP3Serializer.m_DeferredVariablesDataSize +=
  - 1.05 * variable.PayloadSize() +
  + static_cast<size_t>(1.05 * variable.PayloadSize() +
  4 *
  - m_BP3Serializer.GetBPIndexSizeInData(variable.m_Name,
  - variable.m_Count);
  + m_BP3Serializer.GetBPIndexSizeInData(
  + variable.m_Name, variable.m_Count));
  }
  } // end namespace engine
  