npbackend: fixed bug in the numpy backend where get_data_pointer() didn't check nullify
npbackend: fixed bug in the numpy backend where get_data_pointer() didn't check nullify

madsbk/bohrium,bh107/bohrium,madsbk/bohrium,madsbk/bohrium,bh107/bohrium,madsbk/bohrium,bh107/bohrium,bh107/bohrium