[gnome-boxes] Add missing '\n' to error message

[Christophe Fergeau <teuf src gnome org>]

commit c291419dab0ef969ef7b2fdd244dfd6682c36a7f
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Fri Sep 7 12:09:02 2012 +0200

    Add missing '\n' to error message
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683558

 src/app.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/app.vala b/src/app.vala
index 58d2842..2a7a3e5 100644
--- a/src/app.vala
+++ b/src/app.vala
@@ -322,7 +322,7 @@ private class Boxes.App: Boxes.UI {
             warning (error.message);
         }
         if (default_connection == null) {
-            printerr ("error: missing or failing default libvirt connection");
+            printerr ("Missing or failing default libvirt connection\n");
             application.release (); // will end application
         }