[gnome-desktop] bg-slide-show: Define getter for filename property

[Michael Catanzaro <mcatanzaro src gnome org>]

commit fe8131a579ec43a3b43d2c125dd8345155ce709b
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Tue Jul 16 18:47:42 2019 +0200

    bg-slide-show: Define getter for filename property
    
    Background Slideshow has a 'filename' property with read-write flags, however
    the getter isn't defined, and this would make it work properly when constructed
    from gjs.
    
    Make get_property to set the filename value to fix this.

 libgnome-desktop/gnome-bg-slide-show.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/libgnome-desktop/gnome-bg-slide-show.c b/libgnome-desktop/gnome-bg-slide-show.c
index c4674ba1..62d2f640 100644
--- a/libgnome-desktop/gnome-bg-slide-show.c
+++ b/libgnome-desktop/gnome-bg-slide-show.c
@@ -115,6 +115,9 @@ gnome_bg_slide_show_get_property (GObject     *object,
 
         switch (property_id)
         {
+        case PROP_FILENAME:
+                g_value_set_string (value, self->priv->filename);
+                break;
         case PROP_START_TIME:
                 g_value_set_int (value, self->priv->start_time);
                 break;