Squashed 'external/toxcore/c-toxcore/' changes from 03e9fbf3703..55752a2e2ef

55752a2e2ef fix(toxav): pass video bit rate as kbit Previously we unintentionally made it Mbit.
7e573280a75 docs(toxav): fix docs of toxav.h - fix units to be more readable - use width before height consistently - video -> audio typo
5f88a084e8c fix: friend_connections leak on allocation failure clean up when it only contains connections in the NONE state
6d27a1ae178 fix: wrong comment for closelist
ce4f29e8036 cleanup: Fix all `-Wsign-compare` warnings.
4d4251c397f chore: lower cirrus ci timeout drastically
40676284507 fix: events leak that can occur if allocation fails rare in practice, found by fuzzing
9610ac31c5f fix: Return an error instead of crashing on nullptr args in NGC.
a57c2c8f956 refactor: Make ToxAV independent of toxcore internals.
5752fc29f86 refactor: Make tox-bootstrapd use bool instead of int
df675786eb2 chore: Add release-drafter github action.
03fd7a69dcf chore: Use toktok's cmp instead of upstream.
350c0ba1205 cleanup: Sort apk/apt install commands in Dockerfiles.
8c1bda502cb chore(deps): bump golang.org/x/net
ddb9d3210da chore: Upgrade to FreeBSD 14.1 in cirrus build.
e9076f45bd3 chore(cmake): set options changes as cache and with force

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 55752a2e2ef894bfa6d7a2a21a0278e3f2bede7d

auto_tests/conference_invite_merge_test.c

@@ -21,7 +21,7 @@ static void handle_conference_invite(
     const uint8_t *cookie = tox_event_conference_invite_get_cookie(event);
     const size_t length = tox_event_conference_invite_get_cookie_length(event);
 
-    if (friend_number != -1) {
+    if (friend_number != UINT32_MAX) {
         Tox_Err_Conference_Join err;
         state->conference = tox_conference_join(autotox->tox, friend_number, cookie, length, &err);
         ck_assert_msg(err == TOX_ERR_CONFERENCE_JOIN_OK,