message: COMP: remove unsignedness warning
diff: @@ -39,7 +39,7 @@ rtk::MatlabSparseMatrix::MatlabSparseMatrix(const vnl_sparse_matrix<double>& spa
  unsigned int indexColumn = idx[0] + idx[2]*output->GetLargestPossibleRegion().GetSize()[2];
  sparseMatrixColumn::iterator it = columnsVector[indexColumn].begin();
  while (it != columnsVector[indexColumn].end()) {
  - if (sparseMatrix.getrow() < it->first)
  + if ((unsigned int)sparseMatrix.getrow() < it->first)
  break;
  ++it;
  }
  