[glib: 1/2] gio, tests: fix leak of dbus connection.

[Philip Withnall <pwithnall src gnome org>]

commit bf1a2d707928e129c96af365330b3ac26b04ad15
Author: INSUN PYO <insun pyo samsung com>
Date:   Mon Nov 12 15:45:20 2018 +0900

    gio, tests: fix leak of dbus connection.
    
    
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    1- Start server
       gio/tests/.libs/gdbus-example-peer --server --address unix:abstract=/tmp/peer/myaddr
    
    2- Check the open fds for server process
       lsof -a -p 8253
       ..................
       gdbus-exa 8253 imran    0u   CHR      136,1      0t0        4 /dev/pts/1
       gdbus-exa 8253 imran    1u   CHR      136,1      0t0        4 /dev/pts/1
       gdbus-exa 8253 imran    2u   CHR      136,1      0t0        4 /dev/pts/1
       gdbus-exa 8253 imran    3u  0000        0,9        0     6602 anon_inode
       gdbus-exa 8253 imran    4u  unix 0xf1005680      0t0   966830 @/tmp/peer/myaddr
    
    3- Run the client
       gio/tests/.libs/gdbus-example-peer --address unix:abstract=/tmp/peer/myaddr
    
    4- Check the open fds for server process again
       lsof -a -p 8253
       ..................
       gdbus-exa 8253 imran    0u   CHR      136,1      0t0        4 /dev/pts/1
       gdbus-exa 8253 imran    1u   CHR      136,1      0t0        4 /dev/pts/1
       gdbus-exa 8253 imran    2u   CHR      136,1      0t0        4 /dev/pts/1
       gdbus-exa 8253 imran    3u  0000        0,9        0     6602 anon_inode
       gdbus-exa 8253 imran    4u  unix 0xf1005680      0t0   966830 @/tmp/peer/myaddr
       gdbus-exa 8253 imran    5u  unix 0xf1004280      0t0   965811 @/tmp/peer/myaddr
       gdbus-exa 8253 imran    6u  0000        0,9        0     6602 anon_inode
    
    5- Please note the fd '5u' which is created when client makes connection but even when the client goes 
down, the descriptor is still there..
    
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734281

 gio/tests/gdbus-example-peer.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/gio/tests/gdbus-example-peer.c b/gio/tests/gdbus-example-peer.c
old mode 100644
new mode 100755
index 179aabb7f..bf151cfcf
--- a/gio/tests/gdbus-example-peer.c
+++ b/gio/tests/gdbus-example-peer.c
@@ -121,6 +121,16 @@ static const GDBusInterfaceVTable interface_vtable =
 
 /* ---------------------------------------------------------------------------------------------------- */
 
+static void
+connection_closed (GDBusConnection *connection,
+                   gboolean remote_peer_vanished,
+                   GError *Error,
+                   gpointer user_data)
+{
+  g_print ("Client disconnected.\n");
+  g_object_unref (connection);
+}
+
 static gboolean
 on_new_connection (GDBusServer *server,
                    GDBusConnection *connection,
@@ -144,6 +154,7 @@ on_new_connection (GDBusServer *server,
            g_dbus_connection_get_capabilities (connection) & G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING);
 
   g_object_ref (connection);
+  g_signal_connect (connection, "closed", G_CALLBACK (connection_closed), NULL);
   registration_id = g_dbus_connection_register_object (connection,
                                                        "/org/gtk/GDBus/TestObject",
                                                        introspection_data->interfaces[0],