find_op_rw
static struct opcode_obj_rewrite *find_op_rw(ipfw_insn *cmd,
rw = find_op_rw(cmd, &kidx, &subtype);
rw = find_op_rw(cmd + p->off, NULL, NULL);
rw = find_op_rw(cmd + p->off, NULL, NULL);
rw = find_op_rw(cmd, &kidx, &subtype);
rw = find_op_rw(cmd, &ti->uidx, &ti->type);
if (find_op_rw(cmd, puidx, NULL) == NULL)
rw = find_op_rw(cmd, NULL, NULL);
rw = find_op_rw(cmd, &kidx, NULL);
rw = find_op_rw(cmd, &kidx, NULL);
rw = find_op_rw(cmd, &kidx, NULL);