PVS-Studio warning V523 for IPP Samples

void H264SegmentDecoder::ResetDeblockingVariablesMBAFF()
{
  ...
  if (GetMBFieldDecodingFlag(....))
    m_deblockingParams.nNeighbour[HORIZONTAL_DEBLOCKING] =
      m_CurMBAddr - mb_width * 2;
  else
    m_deblockingParams.nNeighbour[HORIZONTAL_DEBLOCKING] =
      m_CurMBAddr - mb_width * 2;
  ...
}

Most likely this is what should be written at end: mb_width * 2 + 1;


This suspicious code was found in IPP Samples project by PVS-Studio static code analyzer.
Warning message is:
V523 The 'then' statement is equivalent to the 'else' statement. h264_dec umc_h264_segment_decoder_deblocking_mbaff.cpp 340

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