[gnome-boxes] Report USB errors

[Alexander Larsson <alexl src gnome org>]

commit 62838163ef55cb4fcf03ac96d5fe7eb6a5ea97d6
Author: Alexander Larsson <alexl redhat com>
Date:   Fri Nov 9 16:51:03 2012 +0100

    Report USB errors
    
    https://bugzilla.gnome.org/show_bug.cgi?id=672268

 src/spice-display.vala |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/spice-display.vala b/src/spice-display.vala
index 1ff2b1a..3455660 100644
--- a/src/spice-display.vala
+++ b/src/spice-display.vala
@@ -41,6 +41,14 @@ private class Boxes.SpiceDisplay: Boxes.Display {
         session = new Session ();
         audio = Spice.Audio.get (session, null);
         gtk_session = GtkSession.get (session);
+        var manager = UsbDeviceManager.get (session);
+        manager.auto_connect_failed.connect ( (dev, err) => {
+            got_error (err.message);
+        });
+
+        manager.device_error.connect ( (dev, err) => {
+            got_error (err.message);
+        });
 
         this.notify["config"].connect (() => {
             config.sync_properties (gtk_session, gtk_session_sync_properties);