[chronojump] Exit software can be cancelled with Escape

[Xavier de Blas <xaviblas src gnome org>]

commit 247e825074d9f745b616ab9ff6f9314e9fe4ffcf
Author: Xavier de Blas <xaviblas gmail com>
Date:   Sat Jun 13 18:40:29 2020 +0200

    Exit software can be cancelled with Escape

 glade/app1.glade | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/glade/app1.glade b/glade/app1.glade
index 6ccca6de..76476f16 100644
--- a/glade/app1.glade
+++ b/glade/app1.glade
@@ -40434,6 +40434,7 @@ then click this button.</property>
                                                     <property name="can_focus">True</property>
                                                     <property name="receives_default">True</property>
                                                     <signal name="clicked" 
handler="on_button_exit_cancel_clicked" swapped="no"/>
+                                                   <accelerator key="Escape" signal="clicked"/>
                                                     <child>
                                                       <widget class="GtkEventBox" 
id="eventbox_button_exit_cancel">
                                                         <property name="visible">True</property>