rem: memcpy(dataBytes + oldLength, bytes, length);
add: memcpy((unsigned char*)aData->bytes + oldLength, bytes, length);
context: WMAppendDataBytes(WMData *aData, void *bytes, unsigned length) /*FOLD00*/{    unsigned oldLength = aData->length;    unsigned newLength = oldLength + length;    unsigned char *dataBytes = (unsigned char *)aData->bytes;    if (newLength > aData->capacity) {        unsigned nextCapacity = aData->capacity + aData->growth;        unsigned nextGrowth = aData->capacity ? aData->capacity : 1;        while (nextCapacity < newLength) {            unsigned tmp = nextCapacity + nextGrowth;            nextGrowth = nextCapacity;            nextCapacity = tmp;        }        WMSetDataCapacity(aData, nextCapacity);        aData->growth = nextGrowth;    }    memcpy(dataBytes + oldLength, bytes, length);    aData->length = newLength;}