[gnome-builder] dialogs: remove border

[Igor Gnatenko <ignatenko src gnome org>]

commit 953c976359701e9591c719d8e3bea36384ff3067
Author: Paolo Borelli <pborelli gnome org>
Date:   Fri Jan 23 00:02:07 2015 +0100

    dialogs: remove border
    
    Same as GtkMessageDialog
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743382

 src/dialogs/gb-close-confirmation-dialog.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/dialogs/gb-close-confirmation-dialog.c b/src/dialogs/gb-close-confirmation-dialog.c
index c89fd63..1165421 100644
--- a/src/dialogs/gb-close-confirmation-dialog.c
+++ b/src/dialogs/gb-close-confirmation-dialog.c
@@ -128,12 +128,14 @@ static void
 gb_close_confirmation_dialog_init (GbCloseConfirmationDialog *dlg)
 {
        AtkObject *atk_obj;
+       GtkWidget *content_area;
        GtkWidget *action_area;
 
        dlg->priv = gb_close_confirmation_dialog_get_instance_private (dlg);
 
-       gtk_box_set_spacing (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dlg))),
-                            14);
+       content_area = gtk_dialog_get_content_area (GTK_DIALOG (dlg));
+       gtk_container_set_border_width (GTK_CONTAINER (content_area), 0);
+       gtk_box_set_spacing (GTK_BOX (content_area), 14);
        gtk_window_set_skip_taskbar_hint (GTK_WINDOW (dlg), TRUE);
 
        gtk_window_set_title (GTK_WINDOW (dlg), "");