[mutter/wip/carlosg/xwayland-on-demand: 5/10] wayland: Disconnect signal when the display closes

[Carlos Garnacho <carlosg src gnome org>]

commit e775073f5328e3969cd0efd2e9aeed4670700673
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri May 24 20:57:16 2019 +0200

    wayland: Disconnect signal when the display closes
    
    It would be potentially left dangling if the display were closed, and
    reconnected again when restarting the server.

 src/wayland/meta-xwayland.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/wayland/meta-xwayland.c b/src/wayland/meta-xwayland.c
index ab2c5f87c..27f197af2 100644
--- a/src/wayland/meta-xwayland.c
+++ b/src/wayland/meta-xwayland.c
@@ -553,6 +553,9 @@ static void
 on_x11_display_closing (MetaDisplay *display)
 {
   meta_xwayland_shutdown_dnd ();
+  g_signal_handlers_disconnect_by_func (display,
+                                        on_x11_display_closing,
+                                        NULL);
 }
 
 /* To be called right after connecting */