Xext: SProcSyncCreateFence needs to swap drawable id too

Otherwise it causes the server to return BadDrawable giving a
byte-swapped resource id instead of the real id the client sent.

Reported-by: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=69762
Fixes: 397dfd9f8 ("Create/Destroy/Trigger/Reset/Query Fence Sync objs")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
---
(cherry picked from commit e6573baa7d)

Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1438>

Xext/sync.c

@@ -2318,6 +2318,7 @@ SProcSyncCreateFence(ClientPtr client)
     REQUEST(xSyncCreateFenceReq);
     swaps(&stuff->length);
     REQUEST_SIZE_MATCH(xSyncCreateFenceReq);
+    swapl(&stuff->d);
     swapl(&stuff->fid);
 
     return ProcSyncCreateFence(client);