Introduced in
73698d41e4 "Make XYToWindow a screen function"
Moving the code into miwindow.c changed the start of the loop from
RootWindow()->firstChild to DeepestSpriteWindow(). This function is only
supposed to be called from miXYToWindow which resets spriteTraceGood to 1,
thus DeepestSpriteWindow() is always the root window anyway.
What got dropped was the firstChild as the first window to handle, so we may
end up with the root window twice in the sprite trace.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
d7ac9aff06