NULL data space dataset is displayed as a scalar dataset

[kyang2014]

The attached file has a dataset with NULL data space. The HDFView 3.3.0 displays it as a scalar dataset. See the attached screenshot. Here is the h5dump output.

h5dump -H dim_scale_null_space.h5 
HDF5 "dim_scale_null_space.h5" {
GROUP "/" {
   DATASET "x" {
      DATATYPE  H5T_STD_I32LE
      DATASPACE  NULL
      ATTRIBUTE "CLASS" {
         DATATYPE  H5T_STRING {
            STRSIZE 16;
            STRPAD H5T_STR_NULLTERM;
            CSET H5T_CSET_ASCII;
            CTYPE H5T_C_S1;
         }
         DATASPACE  SCALAR
      }

[dim_scale_null_space.h5.gz](https://github.com/HDFGroup/hdfview/files/11881410/dim_scale_null_space.h5.gz)