[the-board] [ui] Set background id from created background instance id

[Lucas Rocha <lucasr src gnome org>]

commit a0cce6c1ac3030dc12e0c6852d3e73a72cc7146c
Author: Lucas Rocha <lucasr gnome org>
Date:   Tue Jan 18 23:45:44 2011 +0000

    [ui] Set background id from created background instance id
    
    This ensures that a new page model will always have a defined background
    id when first saved.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=637703

 src/js/ui/page.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/js/ui/page.js b/src/js/ui/page.js
index d3300c8..a2430da 100644
--- a/src/js/ui/page.js
+++ b/src/js/ui/page.js
@@ -651,7 +651,7 @@ Page.prototype = {
                                             Tb.BoxAlignment.FILL,
                                             Tb.BoxAlignment.FILL);
 
-        this._model.setBackground(backgroundId);
+        this._model.setBackground(this._background.id);
 
         if (oldBackground) {
             this._background.actor.raise(oldBackground.actor);