[rygel] renderer-gst: Fix warning about GIR namespaces

[Jens Georg <jensgeorg src gnome org>]

commit e032f4c5daa0a7e4677ea7f123d0adf03788c725
Author: Jens Georg <mail jensge org>
Date:   Sat May 2 09:33:49 2020 +0200

    renderer-gst: Fix warning about GIR namespaces

 src/librygel-renderer-gst/rygel-playbin-player.vala | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/librygel-renderer-gst/rygel-playbin-player.vala 
b/src/librygel-renderer-gst/rygel-playbin-player.vala
index a4a47230..5007dd46 100644
--- a/src/librygel-renderer-gst/rygel-playbin-player.vala
+++ b/src/librygel-renderer-gst/rygel-playbin-player.vala
@@ -30,7 +30,7 @@
 using Gst;
 using GUPnP;
 
-public errordomain Rygel.Playbin.PlayerError {
+public errordomain Rygel.PlaybinPlayerError {
     NO_ELEMENT
 }
 
@@ -366,8 +366,8 @@ public class Rygel.Playbin.Player : GLib.Object, Rygel.MediaPlayer {
     private Player () throws Error {
         this.playbin = ElementFactory.make ("playbin3", null);
         if (this.playbin == null) {
-            throw new PlayerError.NO_ELEMENT (
-                _("Your GStreamer installation seems to be missing the “playbin” element. The Rygel 
GStreamer renderer implementation cannot work without it"));
+            throw new PlaybinPlayerError.NO_ELEMENT (
+                _("Your GStreamer installation seems to be missing the “playbin3” element. The Rygel 
GStreamer renderer implementation cannot work without it"));
         }
         this.setup_playbin ();
     }