[gupnp] all: Minor simplicifcations and dead code removal

[Jens Georg <jensgeorg src gnome org>]

commit b7c69ce4f33100ad5f8c030d68581152fbf2fc42
Author: Jens Georg <mail jensge org>
Date:   Sat Jun 5 19:51:23 2021 +0200

    all: Minor simplicifcations and dead code removal

 libgupnp/gupnp-device-info.c          | 22 ++++++----------------
 libgupnp/gupnp-service-proxy-action.c |  5 -----
 libgupnp/gupnp-service.c              | 18 ++++--------------
 libgupnp/gupnp-xml-doc.c              |  2 +-
 4 files changed, 11 insertions(+), 36 deletions(-)
---
diff --git a/libgupnp/gupnp-device-info.c b/libgupnp/gupnp-device-info.c
index 0bdbc38..295f3c1 100644
--- a/libgupnp/gupnp-device-info.c
+++ b/libgupnp/gupnp-device-info.c
@@ -168,20 +168,10 @@ gupnp_device_info_dispose (GObject *object)
         info = GUPNP_DEVICE_INFO (object);
         priv = gupnp_device_info_get_instance_private (info);
 
-        if (priv->factory) {
-                g_object_unref (priv->factory);
-                priv->factory = NULL;
-        }
-
-        if (priv->context) {
-                g_object_unref (priv->context);
-                priv->context = NULL;
-        }
-
-        if (priv->doc) {
-                g_object_unref (priv->doc);
-                priv->doc = NULL;
-        }
+        g_clear_object (&priv->factory);
+        g_clear_object (&priv->factory);
+        g_clear_object (&priv->context);
+        g_clear_object (&priv->doc);
 
         G_OBJECT_CLASS (gupnp_device_info_parent_class)->dispose (object);
 }
@@ -722,7 +712,7 @@ typedef struct {
 } Icon;
 
 static Icon *
-icon_parse (G_GNUC_UNUSED GUPnPDeviceInfo *info, xmlNode *element)
+icon_parse (xmlNode *element)
 {
         Icon *icon;
 
@@ -819,7 +809,7 @@ gupnp_device_info_get_icon_url (GUPnPDeviceInfo *info,
                 if (!strcmp ("icon", (char *) element->name)) {
                         gboolean mime_type_ok;
 
-                        icon = icon_parse (info, element);
+                        icon = icon_parse (element);
 
                         if (requested_mime_type) {
                                 if (icon->mime_type)
diff --git a/libgupnp/gupnp-service-proxy-action.c b/libgupnp/gupnp-service-proxy-action.c
index a6689fb..23ba2f6 100644
--- a/libgupnp/gupnp-service-proxy-action.c
+++ b/libgupnp/gupnp-service-proxy-action.c
@@ -191,11 +191,6 @@ check_action_response (G_GNUC_UNUSED GUPnPServiceProxy *proxy,
 }
 
 
-/* GDestroyNotify for GHashTable holding GValues.
- */
-G_GNUC_INTERNAL void
-_value_free (gpointer data);
-
 GUPnPServiceProxyAction *
 gupnp_service_proxy_action_new_internal (const char *action) {
         GUPnPServiceProxyAction *ret;
diff --git a/libgupnp/gupnp-service.c b/libgupnp/gupnp-service.c
index ed8f7dd..ff70fc8 100644
--- a/libgupnp/gupnp-service.c
+++ b/libgupnp/gupnp-service.c
@@ -1736,7 +1736,6 @@ gupnp_service_finalize (GObject *object)
         GUPnPService *service;
         GUPnPServicePrivate *priv;
         GObjectClass *object_class;
-        NotifyData *data;
 
         service = GUPNP_SERVICE (object);
         priv = gupnp_service_get_instance_private (service);
@@ -1748,20 +1747,11 @@ gupnp_service_finalize (GObject *object)
         g_list_free_full (priv->state_variables, g_free);
 
         /* Free notify queue */
-        while ((data = g_queue_pop_head (priv->notify_queue)))
-                notify_data_free (data);
-
-        g_queue_free (priv->notify_queue);
+        g_queue_free_full (priv->notify_queue,
+                           (GDestroyNotify) notify_data_free);
 
-        if (priv->session) {
-                g_object_unref (priv->session);
-                priv->session = NULL;
-        }
-
-        if (priv->introspection) {
-                g_object_unref (priv->introspection);
-                priv->introspection = NULL;
-        }
+        g_clear_object (&priv->session);
+        g_clear_object (&priv->introspection);
 
         /* Call super */
         object_class = G_OBJECT_CLASS (gupnp_service_parent_class);
diff --git a/libgupnp/gupnp-xml-doc.c b/libgupnp/gupnp-xml-doc.c
index 353632d..0155ea4 100644
--- a/libgupnp/gupnp-xml-doc.c
+++ b/libgupnp/gupnp-xml-doc.c
@@ -65,7 +65,7 @@ gupnp_xml_doc_finalize (GObject *object)
 
         doc = GUPNP_XML_DOC (object);
 
-        xmlFreeDoc (doc->doc);
+        g_clear_pointer (&doc->doc, xmlFreeDoc);
 
         G_OBJECT_CLASS (gupnp_xml_doc_parent_class)->finalize (object);
 }