[gnome-boxes] machine: Don't save already saved machines

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit de8cc2b0420bea69c3c7367c3e735636ec073f2a
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Sat Nov 24 17:49:43 2012 +0200

    machine: Don't save already saved machines
    
    Otherwise we get an error.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=688980

 src/machine.vala |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/src/machine.vala b/src/machine.vala
index ecde3b1..45986dd 100644
--- a/src/machine.vala
+++ b/src/machine.vala
@@ -219,6 +219,11 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
     }
 
     public async void save () throws GLib.Error {
+        if (state == Machine.MachineState.SAVED) {
+            debug ("Not saving '%s' since its already in saved state.", name);
+            return;
+        }
+
         var info = this.info;
         this.info = (info != null)? info + "\n" : "";
         this.info += _("Saving...");