pfr_clr_tstats
int pfr_clr_tstats(struct pfr_table *, int, int *, int);
RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags));
error = pfr_clr_tstats(io->pfrio_buffer, io->pfrio_size,
int pfr_clr_tstats(struct pfr_table *, int, int *, int);