PVS-Studio warning V519 for IPP Samples

Status H264ENC_MAKE_NAME(H264CoreEncoder_UpdateRefPicMarking)(
    void* state)
{
  ...
  // set frame_num to zero for this picture, for correct
  // FrameNumWrap
  core_enc->m_pCurrentFrame->m_FrameNum = 0;
  core_enc->m_pCurrentFrame->m_FrameNum = 0;
  ...
}

This suspicious code was found in IPP Samples project by PVS-Studio static code analyzer.
Warning message is:
V519 The 'core_enc->m_pCurrentFrame->m_FrameNum' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 1804, 1805. h264_enc umc_h264_video_encoder_tmpl.cpp.h 1805

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