[gupnp-tools] network-light: Fix device creation

[Jens Georg <jensgeorg src gnome org>]

commit 0ed37b3d70eef65723ae8560289a5d5b62e26cc0
Author: Jens Georg <mail jensge org>
Date:   Sat Jul 25 21:05:44 2020 +0200

    network-light: Fix device creation

 src/network-light/upnp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/network-light/upnp.c b/src/network-light/upnp.c
index e5d593e..1b5dadf 100644
--- a/src/network-light/upnp.c
+++ b/src/network-light/upnp.c
@@ -409,9 +409,9 @@ static void init_uuid (void)
         char *udn;
 
         uuid = gupnp_get_uuid ();
+        const xmlDoc *xml_doc = gupnp_xml_doc_get_doc (doc);
 
-        uuid_node = xml_util_get_element ((xmlNode *) doc,
-                gupnp_xml_doc_get_doc (doc),
+        uuid_node = xml_util_get_element ((xmlNode *) xml_doc,
                                           "root",
                                           "device",
                                           "UDN",