[flac-dev] FIxed rest of cast-align warnings

[lvqcl]

Erik de Castro Lopo wrote:

> Maybe a comment stating that all these array are exactly the same in
> bytes, but the number of elements is different because of the different
> size of each element? Would that help?

Well, why not... Anyway, if sizeof(FLAC__int32) is always 4 and
sizeof(FLAC__int16) is always 2 then 4/2 === 2 and it's more
of a nitpicking than a real issue.