[gupnp] service-action: Potential fix for issue in Flatpak

[Jens Georg <jensgeorg src gnome org>]

commit f4d5ed36a649b4dd0ec11a7cf3f04509b957e347
Author: Jens Georg <mail jensge org>
Date:   Sun May 8 17:07:37 2022 +0200

    service-action: Potential fix for issue in Flatpak
    
    g_clear_pointer seems to run on a NULL ptr

 libgupnp/gupnp-service-info.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/libgupnp/gupnp-service-info.c b/libgupnp/gupnp-service-info.c
index 58b31df..082839e 100644
--- a/libgupnp/gupnp-service-info.c
+++ b/libgupnp/gupnp-service-info.c
@@ -532,6 +532,7 @@ get_scpd_document_finished (GObject *source,
 {
         GError *error = NULL;
         GTask *task = G_TASK (user_data);
+        xmlDoc *scpd = NULL;
 
         GBytes *bytes =
                 soup_session_send_and_read_finish (SOUP_SESSION (source),
@@ -556,7 +557,6 @@ get_scpd_document_finished (GObject *source,
 
         gsize length;
         gconstpointer data = g_bytes_get_data (bytes, &length);
-        xmlDoc *scpd = NULL;
         scpd = xmlRecoverMemory (data, length);
         if (scpd == NULL) {
                 g_task_return_new_error (task,