[longomatch] Fix exception when the output dir is not set

[Andoni Morales Alastruey <amorales src gnome org>]

commit 63a59f98ee77b50473f7807445478ff60eeee9a7
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Sat Oct 12 18:40:00 2013 +0200

    Fix exception when the output dir is not set

 LongoMatch.GUI/Gui/GUIToolkit.cs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/LongoMatch.GUI/Gui/GUIToolkit.cs b/LongoMatch.GUI/Gui/GUIToolkit.cs
index ebb7800..638ff41 100644
--- a/LongoMatch.GUI/Gui/GUIToolkit.cs
+++ b/LongoMatch.GUI/Gui/GUIToolkit.cs
@@ -137,7 +137,7 @@ namespace LongoMatch.Gui
                                if (!vep.SplitFiles && vep.EncodingSettings.OutputFile == "") {
                                        WarningMessage(Catalog.GetString("Please, select a video file."));
                                        response=vep.Run();
-                               } else if (vep.SplitFiles && vep.OutputDir == "") {
+                               } else if (vep.SplitFiles && vep.OutputDir == null) {
                                        WarningMessage(Catalog.GetString("Please, select an output 
directory."));
                                        response=vep.Run();
                                } else {