[gnome-control-center] network: Fix small memory leak

[Robert Ancell <rancell src gnome org>]

commit 25963ccf8c9449c5f00d17212e8c62fd8bac3373
Author: Robert Ancell <robert ancell canonical com>
Date:   Tue Nov 17 11:19:01 2020 +1300

    network: Fix small memory leak

 panels/network/net-device-wifi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/panels/network/net-device-wifi.c b/panels/network/net-device-wifi.c
index 8b784a027..7f2de4c7f 100644
--- a/panels/network/net-device-wifi.c
+++ b/panels/network/net-device-wifi.c
@@ -177,7 +177,7 @@ get_secrets_cb (GObject            *source_object,
                 gpointer            data)
 {
         NetDeviceWifi *self = data;
-        GVariant *secrets;
+        g_autoptr(GVariant) secrets = NULL;
         g_autoptr(GError) error = NULL;
 
         secrets = nm_remote_connection_get_secrets_finish (NM_REMOTE_CONNECTION (source_object), res, 
&error);