[gtk/wip/Jehan/GtkIMContextWayland] modules: add a weak pointer to the GtkIMContextWayland.

[Jehan <jehanp src gnome org>]

commit 9ed8cadb4446a2b46da118802bbed3b094b2bf43
Author: Jehan <jehan girinstud io>
Date:   Sun Jun 28 16:52:33 2020 +0200

    modules: add a weak pointer to the GtkIMContextWayland.

 modules/input/imwayland.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/modules/input/imwayland.c b/modules/input/imwayland.c
index 12d18a0f64..33c92e9f7b 100644
--- a/modules/input/imwayland.c
+++ b/modules/input/imwayland.c
@@ -749,6 +749,7 @@ gtk_im_context_wayland_focus_in (GtkIMContext *context)
   if (context_wayland->gesture)
     gtk_event_controller_reset (GTK_EVENT_CONTROLLER (context_wayland->gesture));
   global->current = context;
+  g_object_add_weak_pointer (G_OBJECT (context), (gpointer *) &global->current);
 
   if (global->focused)
     enable (context_wayland);