int ziplistSafeToAdd(unsigned char* zl, size_t add) {
    size_t len = zl? ziplistBlobLen(zl): 0;
    if (len + add > ZIPLIST_MAX_SAFETY_SIZE)
        return 0;
    return 1;
}
int ziplistSafeToAdd(unsigned char* zl, size_t add) {
    size_t len = zl? ziplistBlobLen(zl): 0;
    if (len + add > ZIPLIST_MAX_SAFETY_SIZE)
        return 0;
    return 1;
}