[gtk/wip/carlosg/tablet-invalid-reads: 1/2] gdk: Fix wl_output accounting on tablet devices

[Carlos Garnacho <carlosg src gnome org>]

commit d70f85d6b9e5bc8d0e9890eda55d05a2510f0037
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Oct 8 17:46:38 2019 +0200

    gdk: Fix wl_output accounting on tablet devices
    
    The code managing this accounting mixed seat and tablet output lists,
    can't bode well. Fixes invalid reads on list elements, as there are
    dangling pointers.
    
    Closes: https://gitlab.gnome.org/GNOME/gtk/issues/2157

 gdk/wayland/gdkdevice-wayland.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index a64f33c871..fa292d25a7 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -4616,7 +4616,7 @@ pointer_surface_enter (void              *data,
   if (tablet)
     {
       tablet->pointer_info.pointer_surface_outputs =
-        g_slist_append (seat->pointer_info.pointer_surface_outputs, output);
+        g_slist_append (tablet->pointer_info.pointer_surface_outputs, output);
     }
   else
     {
@@ -4645,7 +4645,7 @@ pointer_surface_leave (void              *data,
   if (tablet)
     {
       tablet->pointer_info.pointer_surface_outputs =
-        g_slist_remove (seat->pointer_info.pointer_surface_outputs, output);
+        g_slist_remove (tablet->pointer_info.pointer_surface_outputs, output);
     }
   else
     {