macho: fix incorrect representation of encodings count per page
There can be a maximum of 256 compact encodings per page in compact
unwind info, and we were using `u8` to represent the count which is insufficient.
This commit bumps it to `u9`.
94c68c1f9eJakub Konka committed on 2/8/2023, 4:03:14 AMparent9ccd8ed