Fix typo.
libossaudio is unavailable.
Update net/netatalk to v2.2.5

Changes in 2.2.5
================
* FIX: Fix errors searching volumes
* NEW: Configurable symlink handling with a new volume option
       'followsymlinks'. Setting the option causes afpd to follow
       symlinks on the server side.
* UPD: Reload groups when reloading volumes. FR #71.
* FIX: Fix a possible crash in cname() where cname_mtouname calls
       dirlookup() where the curdir is freed because the dircache
       detected a dev/inode cache difference and evicted the object
       from the cache. Fixes bug #498.
* FIX: Change default FinderInfo for directories to be all 0, fixes
       bug 514.
Updated net/netatalk to 2.2.5