Justin Mayfield authored Aug 07, 2023 and Marge Bot committed Jun 16, 2024

Check that the transform for a display is unmodified before allowing it
to be skipped during an update.

This is a reworked patch from Arsalan Awan's 2017 post:
    https://lists.x.org/archives/xorg-devel/2017-December/055482.html

Fixes #36

Part-of: <https://gitlab.freedesktop.org/xorg/app/xrandr/-/merge_requests/11>