[gnome-boxes] installer: Remove redundant get_preferred_language() argument

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 3f0d677bcb949a82738bc5d4a5fd42a9597f4683
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Dec 19 23:14:12 2012 +0200

    installer: Remove redundant get_preferred_language() argument
    
    https://bugzilla.gnome.org/show_bug.cgi?id=690536

 src/unattended-installer.vala |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/unattended-installer.vala b/src/unattended-installer.vala
index 33c2f57..ab1567f 100644
--- a/src/unattended-installer.vala
+++ b/src/unattended-installer.vala
@@ -98,10 +98,10 @@ private class Boxes.UnattendedInstaller: InstallerMedia {
         }
     }
 
-    private string get_preferred_language (InstallerMedia media) {
+    private string get_preferred_language () {
         var system_langs = Intl.get_language_names ();
         var media_langs = new HashTable<string, unowned string> (str_hash, str_equal);
-        var media_langs_list = media.os_media.languages;
+        var media_langs_list = os_media.languages;
 
         foreach (var lang in media_langs_list)
             media_langs.add (lang);
@@ -146,7 +146,7 @@ private class Boxes.UnattendedInstaller: InstallerMedia {
         var date = new DateTime.from_timeval_local (time);
         timezone = date.get_timezone_abbreviation ();
 
-        lang = get_preferred_language (media);
+        lang = get_preferred_language ();
         kbd = lang;
         product_key_format = get_product_key_format ();