[gjs] context: Handle dispose notify manually

[Philip Chimento <pchimento src gnome org>]

commit 6daf41c4796a57584e5755a522971a6374eb2b67
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Tue May 18 10:43:51 2021 +0200

    context: Handle dispose notify manually
    
    There's no need to add a weak ref on context, we can just handle this on
    disposition (but to ensure this happens once as the weak ref does, we
    check if context is set)

 gjs/context.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gjs/context.cpp b/gjs/context.cpp
index db8e294b..948ca8c6 100644
--- a/gjs/context.cpp
+++ b/gjs/context.cpp
@@ -368,6 +368,9 @@ gjs_context_dispose(GObject *object)
     gjs_object_clear_toggles();
     gjs_object_shutdown_toggle_queue();
 
+    if (gjs->context())
+        ObjectInstance::context_dispose_notify(nullptr, object);
+
     /* Run dispose notifications next, so that anything releasing
      * references in response to this can still get garbage collected */
     gjs_debug(GJS_DEBUG_CONTEXT,
@@ -480,8 +483,6 @@ gjs_context_constructed(GObject *object)
     g_mutex_unlock(&contexts_lock);
 
     setup_dump_heap();
-
-    g_object_weak_ref(object, &ObjectInstance::context_dispose_notify, nullptr);
 }
 
 GjsContextPrivate::GjsContextPrivate(JSContext* cx, GjsContext* public_context)