[gupnp-av] Add missing G_GNUC_INTERNAL to private functions

[Jens Georg <jensgeorg src gnome org>]

commit d464419fa909b2acf0f601982ea715568c0da528
Author: Jens Georg <mail jensge org>
Date:   Sun Jul 4 00:12:32 2021 +0200

    Add missing G_GNUC_INTERNAL to private functions

 libgupnp-av/gupnp-didl-lite-contributor-private.h | 2 +-
 libgupnp-av/gupnp-didl-lite-descriptor-private.h  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgupnp-av/gupnp-didl-lite-contributor-private.h 
b/libgupnp-av/gupnp-didl-lite-contributor-private.h
index c1c4295..3e4b7db 100644
--- a/libgupnp-av/gupnp-didl-lite-contributor-private.h
+++ b/libgupnp-av/gupnp-didl-lite-contributor-private.h
@@ -20,7 +20,7 @@
 
 G_BEGIN_DECLS
 
-GUPnPDIDLLiteContributor *
+G_GNUC_INTERNAL GUPnPDIDLLiteContributor *
 gupnp_didl_lite_contributor_new_from_xml (xmlNode     *xml_node,
                                           GUPnPAVXMLDoc *xml_doc);
 
diff --git a/libgupnp-av/gupnp-didl-lite-descriptor-private.h 
b/libgupnp-av/gupnp-didl-lite-descriptor-private.h
index 317d92f..67fd95e 100644
--- a/libgupnp-av/gupnp-didl-lite-descriptor-private.h
+++ b/libgupnp-av/gupnp-didl-lite-descriptor-private.h
@@ -19,7 +19,7 @@
 
 G_BEGIN_DECLS
 
-GUPnPDIDLLiteDescriptor *
+G_GNUC_INTERNAL GUPnPDIDLLiteDescriptor *
 gupnp_didl_lite_descriptor_new_from_xml (xmlNode     *xml_node,
                                          GUPnPAVXMLDoc *xml_doc);