message: Set AvailableStepsCount to 1 with SST engine
diff: @@ -41,6 +41,7 @@ SstReader::SstReader(IO &io, const std::string &name, const Mode mode,
  Variable<T> *variable = \
  &(Reader->m_IO.DefineVariable<T>(variableName)); \
  variable->SetData((T *)data); \
  + variable->m_AvailableStepsCount = 1; \
  return (void *)variable; \
  }
  @@ -74,6 +75,7 @@ SstReader::SstReader(IO &io, const std::string &name, const Mode mode,
  { \
  Variable<T> *variable = &(Reader->m_IO.DefineVariable<T>( \
  variableName, VecShape, VecStart, VecCount)); \
  + variable->m_AvailableStepsCount = 1; \
  return (void *)variable; \
  }
  ADIOS2_FOREACH_TYPE_1ARG(declare_type)
  