[longomatch] Fix exception when no playlist is created

[Andoni Morales Alastruey <amorales src gnome org>]

commit 810ac8156f5a0cd8eaf4869f46dd91070eedacf0
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Fri Oct 24 19:36:03 2014 +0200

    Fix exception when no playlist is created

 LongoMatch.Services/Services/PlaylistManager.cs |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/LongoMatch.Services/Services/PlaylistManager.cs b/LongoMatch.Services/Services/PlaylistManager.cs
index 195ae32..352b9e9 100644
--- a/LongoMatch.Services/Services/PlaylistManager.cs
+++ b/LongoMatch.Services/Services/PlaylistManager.cs
@@ -181,6 +181,9 @@ namespace LongoMatch.Services
                {
                        if (playlist == null) {
                                playlist = HandleNewPlaylist (openedProject);
+                               if (playlist == null) {
+                                       return;
+                               }
                        }
                        playlist.Elements.AddRange (element);
                        Config.EventsBroker.EmitPlaylistsChanged (this);