Update purple_contact_sort's documentation to say it returns < 0 and > 1
Review Request #2077 — Created Nov. 19, 2022 and submitted
It turns out that g_utf8_collate will return values other than -1, 0, and 1 on BSD which broke the unit tests which were expecting -1 but got -25.
Ran the unit tests on FreeBSD and verified they passed.
| Summary | ID |
|---|---|
| 3b4090c7d5175a0042fa4cb1f5a2f603abbac2f0 |
