[gtk/wip/settings-portal] Adapt to timestamp -> serial change in the settings portal

[Matthias Clasen <matthiasc src gnome org>]

commit 4b9abd74edbce984036e7851d7f992a4fb786010
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Nov 4 14:01:23 2018 -0500

    Adapt to timestamp -> serial change in the settings portal

 gdk/wayland/gdkdisplay-wayland.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk/wayland/gdkdisplay-wayland.c b/gdk/wayland/gdkdisplay-wayland.c
index 69785f5d01..2fe02d9482 100644
--- a/gdk/wayland/gdkdisplay-wayland.c
+++ b/gdk/wayland/gdkdisplay-wayland.c
@@ -1638,7 +1638,7 @@ static TranslationEntry translations[] = {
   { FALSE, "org.gnome.desktop.wm.preferences", "action-middle-click-titlebar", "gtk-titlebar-middle-click", 
G_TYPE_STRING, { .s = "none" } },
   { FALSE, "org.gnome.desktop.wm.preferences", "action-right-click-titlebar", "gtk-titlebar-right-click", 
G_TYPE_STRING, { .s = "menu" } },
   { FALSE, "org.gnome.desktop.a11y", "always-show-text-caret", "gtk-keynav-use-caret", G_TYPE_BOOLEAN, { .b 
= FALSE } },
-  { FALSE, "org.gnome.fontconfig", "timestamp", "gtk-fontconfig-timestamp", G_TYPE_INT, { .i = 0 } }
+  { FALSE, "org.gnome.fontconfig", "serial", "gtk-fontconfig-timestamp", G_TYPE_INT, { .i = 0 } }
 };