[gtk] recorder: Don't try to print info about a NULL list model

[Timm Bäder <baedert src gnome org>]

commit 4dca2f9604e2a57d6b6b5ba7557b7cca391846af
Author: Timm Bäder <mail baedert org>
Date:   Thu Jan 31 17:00:50 2019 +0100

    recorder: Don't try to print info about a NULL list model

 gtk/inspector/recorder.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gtk/inspector/recorder.c b/gtk/inspector/recorder.c
index c9053f89c3..8601e77c37 100644
--- a/gtk/inspector/recorder.c
+++ b/gtk/inspector/recorder.c
@@ -396,13 +396,14 @@ recordings_list_row_selected (GtkListBox           *box,
                                                          NULL, NULL);
       g_object_unref (root_model);
       g_object_unref (paintable);
+
+      g_print ("%u render nodes\n", g_list_model_get_n_items (G_LIST_MODEL (priv->render_node_model)));
     }
   else
     {
       gtk_picture_set_paintable (GTK_PICTURE (priv->render_node_view), NULL);
     }
 
-  g_print ("%u render nodes\n", g_list_model_get_n_items (G_LIST_MODEL (priv->render_node_model)));
 
   gtk_list_box_bind_model (GTK_LIST_BOX (priv->render_node_list),
                            G_LIST_MODEL (priv->render_node_model),