uninitbufbio
uninitbufbio(&cbp->cb_buf);
uninitbufbio(&dbuf);
uninitbufbio(&rqg->rqe[rqno].b);
uninitbufbio(&sbp->b);
uninitbufbio(&sbp->b);
void uninitbufbio(struct buf *);
uninitbufbio(nbp);