[chronojump] On delete session, currentPerson = null (fixes crash if encoder analyze was opened and we go to mode

[Xavier de Blas <xaviblas src gnome org>]

commit 785236d346c1d52ec2706330acf71b7f864378a9
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Mar 4 12:51:52 2022 +0100

    On delete session, currentPerson = null (fixes crash if encoder analyze was opened and we go to mode menu 
and to encoder again)

 src/gui/app1/session/delete.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/gui/app1/session/delete.cs b/src/gui/app1/session/delete.cs
index b87b8644f..ff7d2c8ae 100644
--- a/src/gui/app1/session/delete.cs
+++ b/src/gui/app1/session/delete.cs
@@ -15,7 +15,7 @@
  *  along with this program; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
- * Copyright (C) 2004-2020   Xavier de Blas <xaviblas gmail com> 
+ * Copyright (C) 2004-2022   Xavier de Blas <xaviblas gmail com>
  */
 
 using System;
@@ -85,6 +85,7 @@ public partial class ChronoJumpWindow
                {
                        closeSession ();
                        treeview_persons_storeReset();
+                       currentPerson = null;
                }
 
                SqliteSession.DeleteAllStuff(tempDeletingSession.UniqueID.ToString());