[gnote] Replace get_vbox with get_content_area

[Aurimas Černius <aurimasc src gnome org>]

commit 6a2ba44027169d3b3669fe646229ef810870267b
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Sat May 22 22:18:06 2021 +0300

    Replace get_vbox with get_content_area

 src/synchronization/syncdialog.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/synchronization/syncdialog.cpp b/src/synchronization/syncdialog.cpp
index 2f1c3018..479a22f2 100644
--- a/src/synchronization/syncdialog.cpp
+++ b/src/synchronization/syncdialog.cpp
@@ -125,7 +125,7 @@ public:
 
       deleteExistingRadio = manage(new Gtk::RadioButton(m_radio_group, _("Overwrite local note")));
       deleteExistingRadio->signal_toggled().connect(sigc::mem_fun(*this, 
&SyncTitleConflictDialog::radio_toggled));
-      get_vbox()->pack_start(*deleteExistingRadio);
+      get_content_area()->pack_start(*deleteExistingRadio);
 
       alwaysDoThisCheck = manage(new Gtk::CheckButton(_("Always perform this action")));
       get_vbox()->pack_start(*alwaysDoThisCheck);