[gdm] Fix up inverted utf8 check

[Ray Strode <halfline src gnome org>]

commit f352c391ce4550852ad46ab8c3c50394450be82f
Author: Ray Strode <rstrode redhat com>
Date:   Wed Sep 15 20:06:55 2010 -0400

    Fix up inverted utf8 check
    
    There is a check to reject non-utf8 locales,
    but the check was unintentionally inverted.

 gui/simple-greeter/gdm-languages.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gui/simple-greeter/gdm-languages.c b/gui/simple-greeter/gdm-languages.c
index 74d032a..aae345a 100644
--- a/gui/simple-greeter/gdm-languages.c
+++ b/gui/simple-greeter/gdm-languages.c
@@ -369,7 +369,7 @@ add_locale (const char *language_name,
                 name = g_strdup_printf ("%s.utf8", language_name);
 
                 language_name_get_codeset_details (name, NULL, &is_utf8);
-                if (is_utf8) {
+                if (!is_utf8) {
                         g_free (name);
                         return FALSE;
                 }