[gnome-flashback] input-sources: avoid deprecated gdk_error_trap_push

[Alberts Muktupāvels <muktupavels src gnome org>]

commit d6d7db2523771c21090010d4498db35b8eadb83f
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon May 21 17:43:32 2018 +0300

    input-sources: avoid deprecated gdk_error_trap_push

 .../libinput-sources/gf-keyboard-manager.c         |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnome-flashback/libinput-sources/gf-keyboard-manager.c 
b/gnome-flashback/libinput-sources/gf-keyboard-manager.c
index 4d76308..84326c5 100644
--- a/gnome-flashback/libinput-sources/gf-keyboard-manager.c
+++ b/gnome-flashback/libinput-sources/gf-keyboard-manager.c
@@ -661,11 +661,11 @@ gf_keyboard_manager_grab (GfKeyboardManager *manager,
   root = gdk_screen_get_root_window (screen);
   xroot = gdk_x11_window_get_xid (root);
 
-  gdk_error_trap_push ();
+  gdk_x11_display_error_trap_push (display);
   status = XGrabKeyboard (manager->xdisplay, xroot, False,
                           GrabModeAsync, GrabModeSync,
                           timestamp);
-  error = gdk_error_trap_pop ();
+  error = gdk_x11_display_error_trap_pop (display);
 
   if (error != 0)
     return FALSE;