[gnome-boxes] Delete screenshots from deleted machines

[Marc-Andre Lureau <malureau src gnome org>]

commit ad96c19d3274b005423088bc82923532bedfad0c
Author: Marc-Andrà Lureau <marcandre lureau gmail com>
Date:   Thu Sep 6 11:16:23 2012 +0200

    Delete screenshots from deleted machines
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683467

 src/machine.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/machine.vala b/src/machine.vala
index 6463e18..24905c6 100644
--- a/src/machine.vala
+++ b/src/machine.vala
@@ -425,6 +425,7 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
         }
 
         config.delete ();
+        FileUtils.unlink (get_screenshot_filename ());
     }
 
     public override void ui_state_changed () {