From 6b6dd29921be0e347dca0b7c724f23d14db82c7d Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Fri, 27 Sep 2024 19:09:59 +0200
Subject: [PATCH] (!1714) Xext: shm: use CloseScreen hook

Wrapping ScreenRec's function pointers is problematic for many reasons, so
use the new screen close notify hook instead.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 Xext/shm.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/Xext/shm.c b/Xext/shm.c
index a82fbcd39..3ad084f9d 100644
--- a/Xext/shm.c
+++ b/Xext/shm.c
@@ -95,7 +95,6 @@ in this Software without prior written authorization from The Open Group.
 #endif /* XINERAMA */
 
 typedef struct _ShmScrPrivateRec {
-    CloseScreenProcPtr CloseScreen;
     ShmFuncsPtr shmFuncs;
     DestroyPixmapProcPtr destroyPixmap;
 } ShmScrPrivateRec;
@@ -194,15 +193,13 @@ CheckForShmSyscall(void)
 
 #endif
 
-static Bool
-ShmCloseScreen(ScreenPtr pScreen)
+static void
+ShmScreenClose(ScreenPtr pScreen, void *arg)
 {
     ShmScrPrivateRec *screen_priv = ShmGetScreenPriv(pScreen);
 
-    pScreen->CloseScreen = screen_priv->CloseScreen;
     dixSetPrivate(&pScreen->devPrivates, shmScrPrivateKey, NULL);
     free(screen_priv);
-    return (*pScreen->CloseScreen) (pScreen);
 }
 
 static ShmScrPrivateRec *
@@ -212,9 +209,8 @@ ShmInitScreenPriv(ScreenPtr pScreen)
 
     if (!screen_priv) {
         screen_priv = calloc(1, sizeof(ShmScrPrivateRec));
-        screen_priv->CloseScreen = pScreen->CloseScreen;
         dixSetPrivate(&pScreen->devPrivates, shmScrPrivateKey, screen_priv);
-        pScreen->CloseScreen = ShmCloseScreen;
+        dixScreenHookClose(pScreen, ShmScreenClose, NULL);
     }
     return screen_priv;
 }