[gnome-control-center] sharing: Fix memory leak

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 3173ccefb76731b5cef3ecdce325b4279040257b
Author: Robert Ancell <robert ancell canonical com>
Date:   Thu Nov 21 21:09:50 2019 +1300

    sharing: Fix memory leak

 panels/sharing/vino-preferences.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/panels/sharing/vino-preferences.c b/panels/sharing/vino-preferences.c
index f09b034d3..029459dab 100644
--- a/panels/sharing/vino-preferences.c
+++ b/panels/sharing/vino-preferences.c
@@ -39,7 +39,7 @@ vino_get_authtype (GValue   *value,
   g_variant_iter_init (&iter, variant);
   g_value_set_boolean (value, TRUE);
 
-  while (g_variant_iter_next (&iter, "s", &type))
+  while (g_variant_iter_next (&iter, "&s", &type))
     if (strcmp (type, "none") == 0)
       g_value_set_boolean (value, FALSE);