message: Remove typo/repeated code block
diff: @@ -1113,11 +1113,6 @@ double CvCapture_FFMPEG::get_duration_sec() const
  sec = (double)ic->streams[video_stream]->duration * r2d(ic->streams[video_stream]->time_base);
  }
  - if (sec < eps_zero)
  - {
  - sec = (double)ic->streams[video_stream]->duration * r2d(ic->streams[video_stream]->time_base);
  - }
  -
  return sec;
  }
  