sndbuf_dispose
int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count);
sndbuf_dispose(b, NULL, amt);
sndbuf_dispose(bs, NULL, sndbuf_getready(bs));
sndbuf_dispose(b, NULL, amt);
sndbuf_dispose(bs, NULL, sz);
sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs));
sndbuf_dispose(src, buffer, l);
sndbuf_dispose(src, buffer + offset, l);
sndbuf_dispose(src, buffer, l);
sndbuf_dispose(src, buffer, l);
sndbuf_dispose(bs, NULL, sndbuf_getready(bs));