[krb5-auth-dialog] Don't use deprecated GTK_STOCK_*

[Guido Günther <guidog src gnome org>]

commit 5951d74397bc1367403750b96f8c85990910110b
Author: Guido Günther <agx sigxcpu org>
Date:   Thu Oct 23 19:43:37 2014 +0200

    Don't use deprecated GTK_STOCK_*

 src/ka-preferences.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/ka-preferences.c b/src/ka-preferences.c
index d410e48..0ba30e3 100644
--- a/src/ka-preferences.c
+++ b/src/ka-preferences.c
@@ -296,8 +296,8 @@ ka_preferences_browse_certs (GtkEntry *entry)
     filechooser = gtk_file_chooser_dialog_new(_("Choose Certificate"),
                                               GTK_WINDOW (prefs.dialog),
                                               GTK_FILE_CHOOSER_ACTION_OPEN,
-                                              GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
-                                              GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
+                                              _("_Cancel"), GTK_RESPONSE_CANCEL,
+                                              _("_Open"), GTK_RESPONSE_ACCEPT,
                                               NULL);
 
     current = gtk_entry_get_text (entry);