Snippets for alsa-plugins 1.2.12 from FreeBSD 150arm64

Sourced from https://pkg-status.freebsd.org/ampere5/data/latest-per-pkg/alsa-plugins/1.2.12_2/150arm64-default.log.

• pcm_oss.c:311:14: warning: variable 'err' set but not used [-Wunused-but-set-variable]
    311 |         int i, tmp, err;
        |                     ^