Check iVolumes indicator

[kenorb]

This code potentially returns EMPTY_VALUE.

      case IDATA_BUILTIN:
        _value = Indi_Volumes::iVolumes(GetSymbol(), GetTf(), /*[*/ GetAppliedVolume() /*]*/, _mode, _ishift, THIS_PTR);
        break;

Initialized by:

    IndiVolumesParams _indi_volumes_params(VOLUME_TICK, ::Rider_Indi_Volumes_Shift);
    _indi_volumes_params.SetTf(Get<ENUM_TIMEFRAMES>(STRAT_PARAM_TF));
    SetIndicator(new Indi_Volumes(_indi_volumes_params), INDI_VOLUMES);