[gnome-boxes] Xml.Parse may return null if URI is invalid

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

commit 34ae8f90b00ac416b404b2e4982c4cc92858ba93
Author: Stefano Facchini <stefano facchini gmail com>
Date:   Fri Nov 18 15:23:37 2011 +0100

    Xml.Parse may return null if URI is invalid

 src/wizard.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/wizard.vala b/src/wizard.vala
index 7feb42d..4b5c63e 100644
--- a/src/wizard.vala
+++ b/src/wizard.vala
@@ -175,7 +175,7 @@ private class Boxes.Wizard: Boxes.UI {
     private void prepare_for_uri (string uri_as_text) throws Boxes.Error {
         var uri = Xml.URI.parse (uri_as_text);
 
-        if (uri.server == null)
+        if (uri == null || uri.server == null)
             throw new Boxes.Error.INVALID ("the URI is invalid");
 
         source = new CollectionSource (uri.server, uri.scheme, uri_as_text);