OsmFileReader may fail due to unsigned integer underflow/overflow

OsmFileReader may fail due to unsigned integer underflow/overflow, resulting in an incorrect end-of-file calculation.

Variable bytes_read can be assigned a negative value, which causes underflow.

It may happen that the expression (m_ui64CPIODataSize - m_cpioHeader.m_ui64FileSize) may have a value greater than bytes_read

    if (m_ui64CPIODataSize > m_cpioHeader.m_ui64FileSize && bytes_read > 0) {
      bytes_read = bytes_read - (m_ui64CPIODataSize - m_cpioHeader.m_ui64FileSize);
    }