Potential memory leak

[stasos24]

File:/src/math/Base58.cpp:75

std::string ledger::core::Base58::encode(const std::vector<uint8_t> &bytes,
                                         const std::shared_ptr<api::DynamicObject> &config) {
    auto base58Dictionary = getNetworkBase58Dictionary(config);
    std::string result;
    const double iFactor = 1.36565823730976103695740418120764243208481439700722980119458355862779176747360903943915516885072037696111192757109;
    int len = bytes.size();
    int zeros = 0, length = 0, pbegin = 0, pend;
    pend = len;
    while (pbegin != pend && !bytes[pbegin]) pbegin = ++zeros;
    const int size = 1 + iFactor * (double)(pend - pbegin);
    unsigned char* b58 = new unsigned char[size];
    for (int i = 0; i < size; i++) b58[i] = 0;
    while (pbegin != pend) {
        unsigned int carry = bytes[pbegin];
        int i = 0;
        for (int it1 = size - 1; (carry || i < length) && (it1 != -1); it1--, i++) {
            carry += 256 * b58[it1];
            b58[it1] = carry % 58;
            carry /= 58;
        }
        if (carry) return result; //b58 - memory leak, result - return of uninitialized value
        length = i;
        pbegin++;
    }
    int it2 = size - length;
    while ((it2 - size) && !b58[it2]) it2++;

    int ri = 0;
    while (ri < zeros) { result += base58Dictionary[0]; ri++; }
    for (; it2 < size; ++it2) result += base58Dictionary[b58[it2]];
    delete[] b58;
    return result;
}