[libsoup/gnome-3-28] soup-socket: fix critical warning when the peer-certificate changes after disconnect

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 703b9eb0760e3d7d4e1a87ad79812258ca7d4960
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Fri Apr 20 12:14:55 2018 +0200

    soup-socket: fix critical warning when the peer-certificate changes after disconnect
    
    (process:15586): GLib-GIO-CRITICAL **: 12:14:39.627: g_tls_connection_get_peer_certificate_errors: 
assertion 'G_IS_TLS_CONNECTION (conn)' failed
    
    We should disconnect the signal on disconnect_internal before clearing
    the connection object.

 libsoup/soup-socket.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libsoup/soup-socket.c b/libsoup/soup-socket.c
index 5363dc7..311c627 100644
--- a/libsoup/soup-socket.c
+++ b/libsoup/soup-socket.c
@@ -188,6 +188,7 @@ disconnect_internal (SoupSocket *sock, gboolean close)
        g_clear_object (&priv->gsock);
        if (priv->conn && close) {
                g_io_stream_close (priv->conn, NULL, NULL);
+               g_signal_handlers_disconnect_by_data (priv->conn, sock);
                g_clear_object (&priv->conn);
        }