core: Revert "core: Allow parentless Media item"

This reverts commit f7bf5909f5b1e1413ad0472a3a7f2fbf9e31edb3.

diff --git a/src/rygel/rygel-media-item.vala b/src/rygel/rygel-media-item.vala
index ea57d22..666dc03 100644 (file)
--- a/src/rygel/rygel-media-item.vala
+++ b/src/rygel/rygel-media-item.vala
@@ -61,7 +61,7 @@ public class Rygel.MediaItem : MediaObject {
     public int color_depth = -1;
 
     public MediaItem (string         id,
-                      MediaContainer? parent,
+                      MediaContainer parent,
                       string         title,
                       string         upnp_class) {
         this.id = id;