message: Remove unnecessary condition (will never reach)
diff: @@ -1032,8 +1032,7 @@ void flip( InputArray _src, OutputArray _dst, int flip_mode )
  }
  if ((size.width == 1 && flip_mode > 0) ||
  - (size.height == 1 && flip_mode == 0) ||
  - (size.height == 1 && size.width == 1 && flip_mode < 0))
  + (size.height == 1 && flip_mode == 0))
  {
  return _src.copyTo(_dst);
  }
  