vsed: refactor digest variables' name
vsed: refactor digest variables' name

We don't specify any specific digest function in this function,
and the old variables' name doesn't reflect the fact that they're
a pair of old and new digest built by the same hash function.

necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages