[longomatch] Play: fix assignment of the key drawing

[Andoni Morales Alastruey <amorales src gnome org>]

commit 9ff302a6c579c4e9bcc6ca4882bf8ec24f037857
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Tue Oct 23 20:37:24 2012 +0200

    Play: fix assignment of the key drawing

 LongoMatch.Core/Store/Play.cs |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/LongoMatch.Core/Store/Play.cs b/LongoMatch.Core/Store/Play.cs
index dcdd599..60c1f3b 100644
--- a/LongoMatch.Core/Store/Play.cs
+++ b/LongoMatch.Core/Store/Play.cs
@@ -133,7 +133,10 @@ namespace LongoMatch.Store
 				else
 					return null;
 			} set {
-				Drawings[0] = value;
+				if (Drawings.Count == 0)
+					Drawings.Add (value);
+				else
+					Drawings[0] = value;
 			}
 		}