[gtksourceview] init: include preview widget when initializing

[Christian Hergert <chergert src gnome org>]

commit 4915558881084d345360f6256fd421ec7fe22f5a
Author: Christian Hergert <chergert redhat com>
Date:   Mon Oct 11 16:54:23 2021 -0700

    init: include preview widget when initializing

 gtksourceview/gtksourceinit.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtksourceview/gtksourceinit.c b/gtksourceview/gtksourceinit.c
index 2a5918df..34c8d86a 100644
--- a/gtksourceview/gtksourceinit.c
+++ b/gtksourceview/gtksourceinit.c
@@ -44,6 +44,7 @@
 #include "gtksourcestyleschemechooserwidget.h"
 #include "gtksourcestyleschememanager-private.h"
 #include "gtksourcestyleschememanager-private.h"
+#include "gtksourcestyleschemepreview.h"
 #include "gtksourceview.h"
 
 #ifdef G_OS_WIN32
@@ -200,6 +201,7 @@ gtk_source_init (void)
                g_type_ensure (GTK_SOURCE_TYPE_STYLE_SCHEME_CHOOSER);
                g_type_ensure (GTK_SOURCE_TYPE_STYLE_SCHEME_CHOOSER_BUTTON);
                g_type_ensure (GTK_SOURCE_TYPE_STYLE_SCHEME_CHOOSER_WIDGET);
+               g_type_ensure (GTK_SOURCE_TYPE_STYLE_SCHEME_PREVIEW);
                g_type_ensure (GTK_SOURCE_TYPE_VIEW);
 
                display = gdk_display_get_default ();