[gnome-control-center] keyboard: Make "Set Shortcut" button accessible

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 0d16cd3feb2400b5b31e206ac5a140aea5298b66
Author: Andrea Azzarone <azzaronea gmail com>
Date:   Fri Mar 30 11:19:56 2018 +0000

    keyboard: Make "Set Shortcut" button accessible
    
    Set 'can-focus' property to True for change_custom_shortcut_button, fixing
    keyboard navigation in the shortcut editor dialog.
    
    https://gitlab.gnome.org/GNOME/gnome-control-center/issues/45

 panels/keyboard/shortcut-editor.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/panels/keyboard/shortcut-editor.ui b/panels/keyboard/shortcut-editor.ui
index 74898ab79..081552955 100644
--- a/panels/keyboard/shortcut-editor.ui
+++ b/panels/keyboard/shortcut-editor.ui
@@ -255,7 +255,7 @@
                     <child>
                       <object class="GtkButton" id="change_custom_shortcut_button">
                         <property name="visible">True</property>
-                        <property name="can_focus">False</property>
+                        <property name="can_focus">True</property>
                         <property name="label" translatable="yes">Set Shortcut…</property>
                         <signal name="clicked" handler="change_custom_shortcut_button_clicked_cb" 
object="CcKeyboardShortcutEditor" swapped="yes" />
                       </object>