[gnome-boxes] wizard: Run wizard_source_update_next on SOURCE page

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit c249a5de648f082c53105784b7f6f25d50a53502
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Mon Mar 3 13:42:06 2014 +0000

    wizard: Run wizard_source_update_next on SOURCE page
    
    wizard_source_update_next() returns if page is not SOURCE and it gets
    called before the page is actually set so it doesn't do anything,
    including the disabling of 'Continue' button.

 src/wizard.vala |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/wizard.vala b/src/wizard.vala
index 185b478..e1ef513 100644
--- a/src/wizard.vala
+++ b/src/wizard.vala
@@ -123,6 +123,9 @@ private class Boxes.Wizard: Gtk.Notebook, Boxes.UI {
         base.switch_page (page_widget, page_num);
 
         App.window.sidebar.set_wizard_page ((WizardPage) page_num);
+
+        if (page_num == WizardPage.SOURCE)
+            wizard_source_update_next ();
     }
 
     private void wizard_source_update_next () {