[retro-gtk/build-doc: 3/8] pixdata: Make private structs as such for GTK-Doc

[Adrien Plazas <aplazas src gnome org>]

commit f3520e34b7ab9cf198dd9eb842b4faaf81dbc612
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Apr 12 20:56:33 2020 +0200

    pixdata: Make private structs as such for GTK-Doc
    
    This will avoid warnings when building the documentation.

 retro-gtk/retro-pixdata-private.h | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/retro-gtk/retro-pixdata-private.h b/retro-gtk/retro-pixdata-private.h
index 5641494..611ae22 100644
--- a/retro-gtk/retro-pixdata-private.h
+++ b/retro-gtk/retro-pixdata-private.h
@@ -14,6 +14,7 @@ G_BEGIN_DECLS
 
 struct _RetroPixdata
 {
+  /*< private >*/
   guint8 *data;
   RetroPixelFormat pixel_format;
   gsize rowstride;