radius_get_vs_string_attr
int radius_get_vs_string_attr(const RADIUS_PACKET *, uint32_t,
CHECK(radius_get_vs_string_attr(packet, 20, 30, buf, sizeof(buf)) == 0);
CHECK(radius_get_vs_string_attr(packet, 50, 60, buf, sizeof(buf)) != 0);
CHECK(radius_get_vs_string_attr(packet, 20, 30, buf, 5) == 0);
CHECK(radius_get_vs_string_attr(packet, 20, 30, buf, 0) == 0);