const bam_pileup1_t *plp;
if (iter->func == 0 || iter->error) { *_n_plp = -1; return 0; }
if ((plp = bam_plp_next(iter, _tid, _pos, _n_plp)) != 0) return plp;
const bam_pileup1_t *plp;
if (iter->func == 0 || iter->error) { *_n_plp = -1; return 0; }
if ((plp = bam_plp_next(iter, _tid, _pos, _n_plp)) != 0) return plp;