Zero values generated from tResample::DoIt in GenericLandData

[WrenRaming]

It appears that the resampling routine in tResample::DoIt under the right conditions will return zero for a landuse class ID even if that value does not exist for a landuse (class). This is an issue the will cause segmentation fault errors in InitSet in the following code snippet (tHydroModel L 424):

landPtr->setLandPtr( cn->getLandUse() );
a_LU    = landPtr->getLandProp(1);

as the land use class is modified by -1 and stored in the shared variable currClass. This is an issues when the landuse class is 0 resulting in accessing a list with the index -1.

Note: This issue appears to be related parallel mode. This is supported by the evidence that for the same mode setup this error does not occur when ran in serial.