Optimization in Load_Map, Calc_CRC

[xezon]

bool Load_Map(Utf8String name)
{
    Utf8String name_copy2;
    int len = 0;
    char name_copy[PATH_MAX];
    strcpy(name_copy, name.Str());
    len = strlen(name_copy);
    char name_without_ext[PATH_MAX];

    if (len >= 4) {
        memset(name_without_ext, 0, PATH_MAX);
        strncpy(name_without_ext, name_copy, len - 4);
    }

    CachedFileInputStream stream;
    name_copy2 = name;

    if (stream.Open(name_copy2)) {
        DataChunkInput input(&stream);
        s_waypoints = new WaypointMap();
        input.Register_Parser("HeightMapData", Utf8String::s_emptyString, Parse_Size_Only_In_Chunk, nullptr);
        input.Register_Parser("WorldInfo", Utf8String::s_emptyString, Parse_World_Dict_Data_Chunk, nullptr);
        input.Register_Parser("ObjectsList", Utf8String::s_emptyString, Parse_Objects_Data_Chunk, nullptr);

        if (!input.Parse(nullptr)) {
            throw CODE_05;
        }

        s_mapDX = s_width - 2 * s_borderSize;
        s_mapDY = s_height - 2 * s_borderSize;
        return true;
    } else {
        return false;
    }
}

unsigned int Calc_CRC(Utf8String dir, Utf8String name)
{
    CRC crc;
    crc.Clear();

    Utf8String str;
    char name_copy[PATH_MAX];
    strcpy(name_copy, name.Str());
    int len = strlen(name_copy);
    char name_without_ext[PATH_MAX];

    if (len >= 4) {
        memset(name_without_ext, 0, PATH_MAX);
        strncpy(name_without_ext, name_copy, len - 4);
    }

    str = name;
    File *file = g_theFileSystem->Open_File(str.Str(), File::READ);

    if (file != nullptr) {
        for (;;) {
            unsigned char buf3[4096];
            int val = file->Read(buf3, 4096);

            if (val <= 0) {
                break;
            }

            crc.Compute_CRC(buf3, val);
        }

        file->Close();
        return crc.Get_CRC();
    } else {
        captainslog_dbgassert(false, "Couldn't open '%s'", name.Str());
        return 0;
    }
}

Both these functions create name_copy, name_without_ext, name_copy2 just to never use them. Can be removed.