[longomatch] Fix Exception changing lineup in the new projects panel

[Andoni Morales Alastruey <amorales src gnome org>]

commit f9858a73403d2bc1dd747c1558afd9201ba174be
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Mon Oct 27 12:11:25 2014 +0100

    Fix Exception changing lineup in the new projects panel

 .../CanvasObjects/PlayersTaggerObject.cs           |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/LongoMatch.Drawing/CanvasObjects/PlayersTaggerObject.cs 
b/LongoMatch.Drawing/CanvasObjects/PlayersTaggerObject.cs
index aca0ff7..df6809c 100644
--- a/LongoMatch.Drawing/CanvasObjects/PlayersTaggerObject.cs
+++ b/LongoMatch.Drawing/CanvasObjects/PlayersTaggerObject.cs
@@ -364,6 +364,11 @@ namespace LongoMatch.Drawing.CanvasObjects
                void UpdateLineup ()
                {
                        List<Player> homeFieldL, awayFieldL, homeBenchL, awayBenchL;
+                       
+                       if (Project == null) {
+                               return;
+                       }
+                       
                        Project.CurrentLineup (currentTime, out homeFieldL, out homeBenchL,
                                               out awayFieldL, out awayBenchL);
                        homePlayingPlayers = homeFieldL.Select (p => playerToPlayerObject [p]).ToList ();