message: Fixed incorrect first window setting for fluid FilterAgent
diff: @@ -371,7 +371,8 @@ std::pair<int,int> cv::gimpl::FluidUpscaleMapper::linesReadAndNextWindow(int out
  int cv::gimpl::FluidFilterAgent::firstWindow(std::size_t) const
  {
  - return k.m_window + k.m_lpi - 1;
  + int lpi = std::min(k.m_lpi, m_outputLines - m_producedLines);
  + return k.m_window + lpi - 1;
  }
  std::pair<int,int> cv::gimpl::FluidFilterAgent::linesReadAndnextWindow(std::size_t) const
  