[gtk+] wayland: Only process the event if it's for a GdkWindow

[Rob Bradford <rbradford src gnome org>]

commit e8e6ae81893ac4a108f5a35ef87091317311e14f
Author: Rob Bradford <rob linux intel com>
Date:   Sun Aug 4 13:32:41 2013 +0100

    wayland: Only process the event if it's for a GdkWindow
    
    When we combine GTK with Clutter we will receive events for both surfaces that
    we have created as well as those created by Clutter.

 gdk/wayland/gdkdevice-wayland.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index 225c12e..7624fa1 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -598,6 +598,8 @@ pointer_handle_enter (void              *data,
 
   if (!surface)
     return;
+  if (!GDK_IS_WINDOW (wl_surface_get_user_data (surface)))
+    return;
 
   _gdk_wayland_display_update_serial (wayland_display, serial);
 
@@ -641,6 +643,8 @@ pointer_handle_leave (void              *data,
 
   if (!surface)
     return;
+  if (!GDK_IS_WINDOW (wl_surface_get_user_data (surface)))
+    return;
 
   _gdk_wayland_display_update_serial (wayland_display, serial);
 
@@ -844,6 +848,8 @@ keyboard_handle_enter (void               *data,
 
   if (!surface)
     return;
+  if (!GDK_IS_WINDOW (wl_surface_get_user_data (surface)))
+    return;
 
   _gdk_wayland_display_update_serial (wayland_display, serial);
 
@@ -878,6 +884,8 @@ keyboard_handle_leave (void               *data,
 
   if (!surface)
     return;
+  if (!GDK_IS_WINDOW (wl_surface_get_user_data (surface)))
+    return;
 
   _gdk_wayland_display_update_serial (wayland_display, serial);