[mutter] cogl: Use memory management helpers more

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 2aea404b149eda40665dd517c3baff5a1e79a288
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Oct 14 21:15:50 2020 +0200

    cogl: Use memory management helpers more
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1496

 cogl/cogl/cogl-framebuffer.c | 8 ++------
 cogl/cogl/cogl-onscreen.c    | 4 ++--
 2 files changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/cogl/cogl/cogl-framebuffer.c b/cogl/cogl/cogl-framebuffer.c
index ba33bfcbcc..1073685b62 100644
--- a/cogl/cogl/cogl-framebuffer.c
+++ b/cogl/cogl/cogl-framebuffer.c
@@ -887,13 +887,9 @@ _cogl_framebuffer_flush_dependency_journals (CoglFramebuffer *framebuffer)
 {
   CoglFramebufferPrivate *priv =
     cogl_framebuffer_get_instance_private (framebuffer);
-  GList *l;
 
-  for (l = priv->deps; l; l = l->next)
-    _cogl_framebuffer_flush_journal (l->data);
-  for (l = priv->deps; l; l = l->next)
-    g_object_unref (l->data);
-  g_list_free (priv->deps);
+  g_list_foreach (priv->deps, (GFunc) _cogl_framebuffer_flush_journal, NULL);
+  g_list_free_full (priv->deps, g_object_unref);
   priv->deps = NULL;
 }
 
diff --git a/cogl/cogl/cogl-onscreen.c b/cogl/cogl/cogl-onscreen.c
index d3585ba46f..651f3a7275 100644
--- a/cogl/cogl/cogl-onscreen.c
+++ b/cogl/cogl/cogl-onscreen.c
@@ -198,8 +198,8 @@ _cogl_dispatch_onscreen_cb (CoglContext *context)
   _cogl_list_insert_list (&queue, &context->onscreen_events_queue);
   _cogl_list_init (&context->onscreen_events_queue);
 
-  _cogl_closure_disconnect (context->onscreen_dispatch_idle);
-  context->onscreen_dispatch_idle = NULL;
+  g_clear_pointer (&context->onscreen_dispatch_idle,
+                   _cogl_closure_disconnect);
 
   _cogl_list_for_each_safe (event, tmp, &queue, link)
     {