[gnome-boxes/wip/image-import: 6/9] vm-configurator: Add a sanity check

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 964a3c6ec26b9e114e55610672fad4f1329d89b6
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Jun 5 04:19:15 2013 +0300

    vm-configurator: Add a sanity check

 src/vm-configurator.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/vm-configurator.vala b/src/vm-configurator.vala
index 733d6d0..7321e71 100644
--- a/src/vm-configurator.vala
+++ b/src/vm-configurator.vala
@@ -325,6 +325,7 @@ private class Boxes.VMConfigurator {
                                            InstallerMedia? install_media,
                                            uint num_reboots = 0,
                                            bool installed = false) {
+        return_if_fail (install_media != null || installed);
         string custom_xml;
 
         if (installed)