[gnome-boxes] installed-media: Throw more specific error

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 88bc1f1f3f6c6e513b8b7df044b9b69755324125
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Sat Dec 21 13:54:02 2013 +0000

    installed-media: Throw more specific error
    
    For unsupported file, throw a more specific error.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=720801

 src/installed-media.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/installed-media.vala b/src/installed-media.vala
index a0b8f8f..28be17e 100644
--- a/src/installed-media.vala
+++ b/src/installed-media.vala
@@ -46,7 +46,7 @@ private class Boxes.InstalledMedia : Boxes.InstallerMedia {
         }
 
         if (!supported)
-            throw new Boxes.Error.INVALID (_("Unsupported disk image format."));
+            throw new IOError.NOT_SUPPORTED (_("Unsupported disk image format."));
 
         device_file = path;
         from_image = true;