Wordlist mode check against last is wrong when external filter modifies word

[solardiz]

A long-standing core bug: the wordlist/rules check against last word (poor man's de-duplication) isn't doing the right thing when an external mode filter modifies the word (the check compares post-filter vs. pre-filter). This appears non-trivial to fix while keeping the current last logic with two buffers coming from rules.c. Maybe something to avoid in a rewrite of that logic.

[solardiz]

Now that we have #4728, we might want to simply drop the hard-coded check(s) against last (and copying to last or swapping of two buffer pointers). On very fast hashes, these checks were possibly unjustified overhead, and on slower hashes they're redundant with the new suppressor.

[solardiz]

Now that we have #4728, we might want to simply drop the hard-coded check(s) against last (and copying to last

This was done in #5716 via d265b3c. Closing.