C++ Mask check for signatures

bool MaskCheck(int StartOffset, const char* Mask, const BYTE* Pattern, const size_t& PatternSize)
{
    // Senza puntatori
    for (unsigned int i=0; i<PatternSize; i++)
    {
        if (Mask[i] == 'x' && Pattern[i] != this->DumpedRegion[StartOffset + i])
            return false;
    }
    return true;

    // Con i puntatori
    for( ; *Mask; ++Mask, ++this->DumpedRegion, ++Pattern ) {
        if( *Mask == 'x' && *this->DumpedRegion != *Pattern )
            return false;
    }
    return (*Mask == NULL);
}