sproc_present_pixmap() was missing byte swaps the variable-length
xPresentNotify array after the fixed header was not
byte-swapped at all (each entry has window and serial CARD32 fields).
Fixes: a5ac3c8712 ("present: add missing byte swapping for various fields")
Assisted-by: Claude:claude-claude-opus-4-6
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2202>
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>