[gnome-flashback] notifications: use symbolic window close icon

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 499a5c0d266b21cc95f8b1ae577ff1cdf61e9b06
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 25 16:09:01 2018 +0300

    notifications: use symbolic window close icon
    
    https://bugzilla.gnome.org/show_bug.cgi?id=794234

 gnome-flashback/libnotifications/gf-bubble.c       |    2 +-
 .../libnotifications/nd-notification-box.c         |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnome-flashback/libnotifications/gf-bubble.c b/gnome-flashback/libnotifications/gf-bubble.c
index 235ded8..21cf8ae 100644
--- a/gnome-flashback/libnotifications/gf-bubble.c
+++ b/gnome-flashback/libnotifications/gf-bubble.c
@@ -599,7 +599,7 @@ gf_bubble_init (GfBubble *bubble)
   atk_action_set_description (ATK_ACTION (atkobj), 0,
                               _("Closes the notification."));
 
-  image = gtk_image_new_from_icon_name ("window-close", GTK_ICON_SIZE_MENU);
+  image = gtk_image_new_from_icon_name ("window-close-symbolic", GTK_ICON_SIZE_MENU);
   gtk_container_add (GTK_CONTAINER (priv->close_button), image);
   gtk_widget_show (image);
 
diff --git a/gnome-flashback/libnotifications/nd-notification-box.c 
b/gnome-flashback/libnotifications/nd-notification-box.c
index 537ac58..7fdda68 100644
--- a/gnome-flashback/libnotifications/nd-notification-box.c
+++ b/gnome-flashback/libnotifications/nd-notification-box.c
@@ -326,7 +326,7 @@ nd_notification_box_init (NdNotificationBox *notification_box)
         atk_object_set_name (atkobj, "");
         atk_object_set_description (atkobj, _("Closes the notification."));
 
-        image = gtk_image_new_from_icon_name ("window-close", GTK_ICON_SIZE_MENU);
+        image = gtk_image_new_from_icon_name ("window-close-symbolic", GTK_ICON_SIZE_MENU);
         gtk_widget_show (image);
         gtk_container_add (GTK_CONTAINER (notification_box->priv->close_button), image);