void hashTypeReleaseIterator(hashTypeIterator *hi) {
    if (hi->encoding == OBJ_ENCODING_HT)
        dictReleaseIterator(hi->di);
    zfree(hi);
}
void hashTypeReleaseIterator(hashTypeIterator *hi) {
    if (hi->encoding == OBJ_ENCODING_HT)
        dictReleaseIterator(hi->di);
    zfree(hi);
}