Fix NCASimpleDataset test.
Fix NCASimpleDataset test.


ranjan1990/mlpack,BookChan/mlpack,minhpqn/mlpack,ersanliqiao/mlpack,trungda/mlpack,chenmoshushi/mlpack,lezorich/mlpack,ranjan1990/mlpack,erubboli/mlpack,chenmoshushi/mlpack,BookChan/mlpack,trungda/mlpack,ajjl/mlpack,stereomatchingkiss/mlpack,theranger/mlpack,ajjl/mlpack,erubboli/mlpack,ajjl/mlpack,datachand/mlpack,thirdwing/mlpack,lezorich/mlpack,Azizou/mlpack,datachand/mlpack,palashahuja/mlpack,minhpqn/mlpack,stereomatchingkiss/mlpack,darcyliu/mlpack,erubboli/mlpack,lezorich/mlpack,minhpqn/mlpack,thirdwing/mlpack,trungda/mlpack,darcyliu/mlpack,theranger/mlpack,theranger/mlpack,ersanliqiao/mlpack,palashahuja/mlpack,ranjan1990/mlpack,chenmoshushi/mlpack,Azizou/mlpack,BookChan/mlpack,datachand/mlpack,thirdwing/mlpack,Azizou/mlpack,ersanliqiao/mlpack,palashahuja/mlpack,bmswgnp/mlpack,bmswgnp/mlpack,bmswgnp/mlpack,darcyliu/mlpack,stereomatchingkiss/mlpack