[gupnp-av] Add missing includes to private headers

[Jens Georg <jensgeorg src gnome org>]

commit f854735bc63aed437445f8ff757a353e3cd01a3f
Author: Jens Georg <mail jensge org>
Date:   Sun Jul 4 00:12:45 2021 +0200

    Add missing includes to private headers

 libgupnp-av/gupnp-didl-lite-createclass-private.h | 1 +
 libgupnp-av/gupnp-didl-lite-descriptor-private.h  | 1 +
 libgupnp-av/gupnp-didl-lite-object-private.h      | 1 +
 libgupnp-av/gupnp-didl-lite-resource-private.h    | 1 +
 4 files changed, 4 insertions(+)
---
diff --git a/libgupnp-av/gupnp-didl-lite-createclass-private.h 
b/libgupnp-av/gupnp-didl-lite-createclass-private.h
index b59ac7f..ba14d64 100644
--- a/libgupnp-av/gupnp-didl-lite-createclass-private.h
+++ b/libgupnp-av/gupnp-didl-lite-createclass-private.h
@@ -14,6 +14,7 @@
 #define GUPNP_DIDL_LITE_CREATE_CLASS_PRIVATE_H
 
 #include "xml-util.h"
+#include "gupnp-didl-lite-createclass.h"
 
 #include <glib-object.h>
 #include <libxml/tree.h>
diff --git a/libgupnp-av/gupnp-didl-lite-descriptor-private.h 
b/libgupnp-av/gupnp-didl-lite-descriptor-private.h
index 67fd95e..6b57994 100644
--- a/libgupnp-av/gupnp-didl-lite-descriptor-private.h
+++ b/libgupnp-av/gupnp-didl-lite-descriptor-private.h
@@ -12,6 +12,7 @@
 #define GUPNP_DIDL_LITE_DESCRIPTOR_PRIVATE_H
 
 #include "xml-util.h"
+#include "gupnp-didl-lite-descriptor.h"
 
 #include <stdarg.h>
 #include <glib-object.h>
diff --git a/libgupnp-av/gupnp-didl-lite-object-private.h b/libgupnp-av/gupnp-didl-lite-object-private.h
index 8f449df..f3c2a76 100644
--- a/libgupnp-av/gupnp-didl-lite-object-private.h
+++ b/libgupnp-av/gupnp-didl-lite-object-private.h
@@ -14,6 +14,7 @@
 #define GUPNP_DIDL_LITE_OBJECT_PRIVATE_H
 
 #include "xml-util.h"
+#include "gupnp-didl-lite-object.h"
 
 #include <glib-object.h>
 #include <libxml/tree.h>
diff --git a/libgupnp-av/gupnp-didl-lite-resource-private.h b/libgupnp-av/gupnp-didl-lite-resource-private.h
index c9c06a3..bd399be 100644
--- a/libgupnp-av/gupnp-didl-lite-resource-private.h
+++ b/libgupnp-av/gupnp-didl-lite-resource-private.h
@@ -12,6 +12,7 @@
 #define GUPNP_DIDL_LITE_RESOURCE_PRIVATE_H
 
 #include "xml-util.h"
+#include "gupnp-didl-lite-resource.h"
 
 #include <stdarg.h>
 #include <glib-object.h>