Correct Uneven Buffer Lengths

[michaelciraci]

I found this while working on #157

I think this < should be a >:

RustFFT/src/array_utils.rs

Line 181 in c7a81da

} else if buffer2.len() < buffer1.len() {

I kept the logic in #157 to match what's in the master branch. I can correct this either in #157 or a new PR.

[ejmahler]

You're right - I imagine what happened is that buffer1 and buffer2 were swapped to achieve the other side of the comparison, but the inequality symbol was also swapped.

What this should really do is match on buffer1.len().cmp(&buffer2.len()).

[michaelciraci]

I agree. Are you ok if I lump this into #157, or would you prefer separate PRs?

[ejmahler]

Put them in the same one imo

[michaelciraci]

Corrected in #157