Snippets for wireplumber 0.5.15 from FreeBSD 150amd64

Sourced from https://pkg-status.freebsd.org/beefy23/data/latest-per-pkg/wireplumber/0.5.15/150amd64-default.log.

• ../modules/flatpak-utils.h:27:12: warning: unused function 'pw_check_flatpak_parse_metadata' [-Wunused-function]
     27 | static int pw_check_flatpak_parse_metadata(const char *buf, size_t size, char **app_id, char **instance_id, char **devices)
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~