[libgovirt] resource: Fix ovirt_resource_rest_call_sync return value

[Eduardo de Barros Lima <eblima src gnome org>]

commit d8adff27374290c0a9ae56d2bbb5dd4e5f29c1a0
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Tue Jul 25 17:34:31 2017 +0200

    resource: Fix ovirt_resource_rest_call_sync return value
    
    Upon success, ovirt_resource_rest_call_sync() was always returning
    NULL, which is not what is expected. This, among other things, made
    ovirt_resource_refresh() non-functional.

 govirt/ovirt-resource.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/govirt/ovirt-resource.c b/govirt/ovirt-resource.c
index 1413a77..0c750ac 100644
--- a/govirt/ovirt-resource.c
+++ b/govirt/ovirt-resource.c
@@ -499,7 +499,7 @@ G_GNUC_INTERNAL RestXmlNode *ovirt_resource_rest_call_sync(OvirtRestCall *call,
         return NULL;
     }
 
-    return root;
+    return ovirt_rest_xml_node_from_call(REST_PROXY_CALL(call));
 }