[longomatch] Fix return when the list is null

[Andoni Morales Alastruey <amorales src gnome org>]

commit d8588ad4c05b1b3957c28705218162d5c5cca981
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Tue Mar 31 19:38:48 2015 +0200

    Fix return when the list is null

 LongoMatch.Services/Services/PlayerController.cs |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/LongoMatch.Services/Services/PlayerController.cs 
b/LongoMatch.Services/Services/PlayerController.cs
index 897613b..d4595b0 100644
--- a/LongoMatch.Services/Services/PlayerController.cs
+++ b/LongoMatch.Services/Services/PlayerController.cs
@@ -118,7 +118,11 @@ namespace LongoMatch.Services
                                }
                        }
                        get {
-                               return camerasVisible.ToList ();
+                               if (camerasVisible != null) {
+                                       return camerasVisible.ToList ();
+                               } else {
+                                       return null;
+                               }
                        }
                }