[gtk+] wayland: fix xdg_surface test in move/resize drag

[Olivier Fourdan <ofourdan src gnome org>]

commit 24f9d2909393b8a2267e30d3f8b6e31d6aaee850
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Fri Jun 2 15:54:50 2017 +0200

    wayland: fix xdg_surface test in move/resize drag
    
    begin_resize_drag() and begin_move_drag() check for xdg_surface being
    not null, but those apply on xdg_toplevel so they should check for
    xdg_toplevel being non-null instead.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781945

 gdk/wayland/gdkwindow-wayland.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/wayland/gdkwindow-wayland.c b/gdk/wayland/gdkwindow-wayland.c
index 6e78de8..cefb539 100644
--- a/gdk/wayland/gdkwindow-wayland.c
+++ b/gdk/wayland/gdkwindow-wayland.c
@@ -3399,7 +3399,7 @@ gdk_wayland_window_begin_resize_drag (GdkWindow     *window,
 
   impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
 
-  if (!impl->display_server.xdg_surface)
+  if (!impl->display_server.xdg_toplevel)
     return;
 
   serial = _gdk_wayland_seat_get_last_implicit_grab_serial (gdk_device_get_seat (device),
@@ -3436,7 +3436,7 @@ gdk_wayland_window_begin_move_drag (GdkWindow *window,
 
   impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
 
-  if (!impl->display_server.xdg_surface)
+  if (!impl->display_server.xdg_toplevel)
     return;
 
   serial = _gdk_wayland_seat_get_last_implicit_grab_serial (gdk_device_get_seat (device),