[gvfs] Don't return NULL from g_daemon_file_query_writable_namespaces()

[Christophe Fergeau <teuf src gnome org>]

commit faa2b07ab0436ad66823eea0cf1720cc41dbc6e8
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Sun Mar 29 17:35:28 2015 +0200

    Don't return NULL from g_daemon_file_query_writable_namespaces()
    
    Since commit b358ca "Make sure metadata is always returned by
    query_writable_namespaces()", query_writable_namespaces() is expected to
    return non-NULL values. There is one error case where it's not currently
    doing that.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=747362

 client/gdaemonfile.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/client/gdaemonfile.c b/client/gdaemonfile.c
index 8403d0f..db36913 100644
--- a/client/gdaemonfile.c
+++ b/client/gdaemonfile.c
@@ -2597,7 +2597,10 @@ g_daemon_file_query_writable_namespaces (GFile                      *file,
 
   proxy = create_proxy_for_file (file, NULL, &path, NULL, cancellable, error);
   if (proxy == NULL)
-    return FALSE;
+    {
+      list = g_file_attribute_info_list_new ();
+      goto out;
+    }
 
   iter_list = NULL;
   res = gvfs_dbus_mount_call_query_writable_namespaces_sync (proxy,