[gnome-boxes] source: do not save automatically if it didn't exist

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit e57da6fd5a9aee3932dace4cf896960fc1bd3a9e
Author: Marc-Andrà Lureau <marcandre lureau gmail com>
Date:   Thu Feb 2 12:00:08 2012 +0100

    source: do not save automatically if it didn't exist
    
    https://bugzilla.gnome.org/show_bug.cgi?id=669409

 src/collection-source.vala |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/collection-source.vala b/src/collection-source.vala
index d45f838..93f1805 100644
--- a/src/collection-source.vala
+++ b/src/collection-source.vala
@@ -68,9 +68,11 @@ private class Boxes.CollectionSource: GLib.Object, Boxes.IConfig {
         owned get { return get_string ("source", "name"); }
         set {
             keyfile.set_string ("source", "name", value);
+            var had_file = has_file;
             this.delete ();
             _filename = null;
-            save ();
+            if (had_file)
+                save ();
         }
     }
     public string? source_type {