[PATCH v2 0/3] MR6722: win32u: Yet more arc fixes.

[Elizabeth Figura (＠zfigura)]

--
  v2: win32u: Do not convert back to integer before finding intersections.
      win32u: Correctly handle transforms which flip in get_arc_points().
      win32u: Normalize inverted rectangles in dibdrv_RoundRect().

https://gitlab.winehq.org/wine/wine/-/merge_requests/6722