[libdazzle] graph: drop surface in destroy

[Christian Hergert <chergert src gnome org>]

commit 22f3cb560668563ac1f972f88067506dbee6217e
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jun 14 16:10:12 2018 -0700

    graph: drop surface in destroy
    
    It's a better idea to drop this before we're in finalizer stage.

 src/graphing/dzl-graph-view.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/graphing/dzl-graph-view.c b/src/graphing/dzl-graph-view.c
index 43f92d9..a83ce17 100644
--- a/src/graphing/dzl-graph-view.c
+++ b/src/graphing/dzl-graph-view.c
@@ -301,6 +301,8 @@ dzl_graph_view_destroy (GtkWidget *widget)
       priv->tick_handler = 0;
     }
 
+  g_clear_pointer (&priv->surface, cairo_surface_destroy);
+
   GTK_WIDGET_CLASS (dzl_graph_view_parent_class)->destroy (widget);
 }
 
@@ -312,7 +314,6 @@ dzl_graph_view_finalize (GObject *object)
 
   g_clear_object (&priv->model);
   g_clear_object (&priv->model_signals);
-  g_clear_pointer (&priv->surface, cairo_surface_destroy);
   g_clear_pointer (&priv->renderers, g_ptr_array_unref);
 
   G_OBJECT_CLASS (dzl_graph_view_parent_class)->finalize (object);