[gnome-control-center] region: Fix stretched "Login Screen" button

[Yosef Or Boczko <yoseforb src gnome org>]

commit 648be6c11a8d8a5fef4f5623cd2ce98414da8159
Author: Yosef Or Boczko <yoseforb gmail com>
Date:   Wed Aug 21 13:47:49 2013 +0300

    region: Fix stretched "Login Screen" button

 panels/region/cc-region-panel.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/panels/region/cc-region-panel.c b/panels/region/cc-region-panel.c
index 5372f60..ef5355d 100644
--- a/panels/region/cc-region-panel.c
+++ b/panels/region/cc-region-panel.c
@@ -1716,6 +1716,7 @@ setup_login_button (CcRegionPanel *self)
         priv->login_button = gtk_toggle_button_new_with_label (_("Login Screen"));
         gtk_style_context_add_class (gtk_widget_get_style_context (priv->login_button),
                                      "text-button");
+        gtk_widget_set_valign (priv->login_button, GTK_ALIGN_CENTER);
         gtk_widget_set_visible (priv->login_button, FALSE);
         gtk_widget_set_sensitive (priv->login_button, FALSE);
         g_signal_connect_swapped (priv->login_button, "notify::active",