Bug#861736: Bug on NeXus library

[Marc Rosanes]

Additional information:

Storing using 'w' format (hdf4), instead of using 'w5' format (hdf5); 
the error does not appear:

import nxs
e = nxs.NXentry(name= "NXtomo")
e.save("filenamenxs.h5",*'**w**'*)