[libpeas] Use gtk_window_has_group()

[Garrett Regier <gregier src gnome org>]

commit f7e43582cf7a1321c48e95a3585dc3d5286875e1
Author: Garrett Regier <alias301 gmail com>
Date:   Tue Jun 29 03:20:13 2010 -0700

    Use gtk_window_has_group()
    
    gtk_window_get_group() never returns NULL.

 libpeasui/peas-ui-plugin-manager.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/libpeasui/peas-ui-plugin-manager.c b/libpeasui/peas-ui-plugin-manager.c
index 7c8a85a..4760ae4 100644
--- a/libpeasui/peas-ui-plugin-manager.c
+++ b/libpeasui/peas-ui-plugin-manager.c
@@ -219,8 +219,11 @@ configure_button_cb (GtkWidget           *button,
   toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (pm)));
   gtk_window_set_transient_for (GTK_WINDOW (conf_dlg), toplevel);
 
-  wg = gtk_window_get_group (toplevel);
-  if (wg == NULL)
+  if (gtk_window_has_group (toplevel))
+    {
+      wg = gtk_window_get_group (toplevel);
+    }
+  else
     {
       wg = gtk_window_group_new ();
       gtk_window_group_add_window (wg, toplevel);