[libdazzle] menus: use define for keywords

[Christian Hergert <chergert src gnome org>]

commit 411985b9d037cae8dea05edd1a08f436244c0963
Author: Christian Hergert <chergert redhat com>
Date:   Mon Oct 26 11:01:08 2020 -0700

    menus: use define for keywords

 src/menus/dzl-menu-manager.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/menus/dzl-menu-manager.c b/src/menus/dzl-menu-manager.c
index 541bc71..e7d2532 100644
--- a/src/menus/dzl-menu-manager.c
+++ b/src/menus/dzl-menu-manager.c
@@ -235,7 +235,7 @@ dzl_menu_manager_resolve_constraints (GMenu *menu)
     {
       g_autofree gchar *i_after = NULL;
 
-      g_menu_model_get_item_attribute (model, i, "after", "s", &i_after);
+      g_menu_model_get_item_attribute (model, i, DZL_MENU_ATTRIBUTE_AFTER, "s", &i_after);
       if (i_after == NULL)
         continue;
 
@@ -275,7 +275,7 @@ dzl_menu_manager_resolve_constraints (GMenu *menu)
     {
       g_autofree gchar *i_before = NULL;
 
-      g_menu_model_get_item_attribute (model, i, "before", "s", &i_before);
+      g_menu_model_get_item_attribute (model, i, DZL_MENU_ATTRIBUTE_BEFORE, "s", &i_before);
       if (i_before == NULL)
         continue;