[rygel/rygel-0-22] renderer-gst: Only try to parse non-empty meta-data

[Jens Georg <jensgeorg src gnome org>]

commit 9974ebccad881e479bd02157fd88aca62e40c9fb
Author: Jens Georg <mail jensge org>
Date:   Sat Jun 28 12:40:16 2014 +0200

    renderer-gst: Only try to parse non-empty meta-data
    
    Signed-off-by: Jens Georg <mail jensge org>

 .../rygel-playbin-player.vala                      |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/librygel-renderer-gst/rygel-playbin-player.vala 
b/src/librygel-renderer-gst/rygel-playbin-player.vala
index eb58560..f1408bf 100644
--- a/src/librygel-renderer-gst/rygel-playbin-player.vala
+++ b/src/librygel-renderer-gst/rygel-playbin-player.vala
@@ -623,6 +623,10 @@ public class Rygel.Playbin.Player : GLib.Object, Rygel.MediaPlayer {
     }
 
     private void guess_duration () {
+        if (this._metadata == null || this._metadata == "") {
+            return;
+        }
+
         var reader = new DIDLLiteParser ();
 
         // Try to guess duration from meta-data.