[gnome-boxes] media-manager: More reliable check for media type

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit daaeec8358f0ae23a33ae1bb1f53c863a315d131
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Sat Dec 21 13:58:04 2013 +0000

    media-manager: More reliable check for media type
    
    Instead of checking for mime-types on file to see if its an
    installer/live media, we now rely on the check for installed media based
    on file extension.
    
    This fixes the regression from commit d231c27 which completely broke
    handling of ISO9660 devices (loop-mounted ISOs and hardware).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=720801

 src/media-manager.vala |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/src/media-manager.vala b/src/media-manager.vala
index 1dfbf53..52f7990 100644
--- a/src/media-manager.vala
+++ b/src/media-manager.vala
@@ -27,10 +27,11 @@ private class Boxes.MediaManager : Object {
                                                                  Cancellable? cancellable = null) throws 
GLib.Error {
         InstallerMedia media;
 
-        if (is_mime_type (path, "application/x-cd-image"))
-            media = yield new InstallerMedia.for_path (path, this, cancellable);
-        else
+        try {
             media = yield new InstalledMedia.guess_os (path, this);
+        } catch (IOError.NOT_SUPPORTED e) {
+            media = yield new InstallerMedia.for_path (path, this, cancellable);
+        }
 
         return create_installer_media_from_media (media);
     }