Fix assertion for proper Huffman merge pattern: 0 == 1 modulo 1.

[pspp] / tests / sys-info.stat

title 'Test SYSFILE INFO, DISPLAY utilities'.

/* Run file-label.stat before running this syntax file, as it
/* creates foo.save.
sysfile info file='foo.save'.

get 'foo.save'.
display names.
display index.
display labels.
display variables.
display dictionary.