[gnome-software/wip/ubuntu-3-20] Handle failure to accept debconf connection

[Robert Ancell <rancell src gnome org>]

commit 82929057d70dcb752dde268e797d632002a0c5c9
Author: Robert Ancell <robert ancell canonical com>
Date:   Tue May 9 13:44:53 2017 +1200

    Handle failure to accept debconf connection

 src/plugins/gs-plugin-apt.cc |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-apt.cc b/src/plugins/gs-plugin-apt.cc
index 4d3333c..55087ba 100644
--- a/src/plugins/gs-plugin-apt.cc
+++ b/src/plugins/gs-plugin-apt.cc
@@ -888,6 +888,10 @@ debconf_accept_cb (GSocket *socket, GIOCondition condition, gpointer user_data)
        g_autoptr(GError) error = NULL;
 
        data->debconf_connection = g_socket_accept (socket, data->cancellable, &error);
+       if (data->debconf_connection == NULL) {
+               g_warning ("Failed to accept debconf connection: %s", error->message);
+               return G_SOURCE_CONTINUE;
+       }
        data->debconf_read_source = g_socket_create_source (data->debconf_connection, G_IO_IN, 
data->cancellable);
        g_source_set_callback (data->debconf_read_source, (GSourceFunc) debconf_read_cb, data, NULL);
        g_source_attach (data->debconf_read_source, data->context);