[gnome-font-viewer] font-view: return early if we have a model already

[Cosimo Cecchi <cosimoc src gnome org>]

commit 096e0097dc0b0e5d39fe37019718bf6896d5d776
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Dec 17 16:08:28 2012 +0100

    font-view: return early if we have a model already

 src/font-view.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/font-view.c b/src/font-view.c
index a8a681e..5af4aad 100644
--- a/src/font-view.c
+++ b/src/font-view.c
@@ -488,6 +488,9 @@ info_button_clicked_cb (GtkButton *button,
 static void
 font_view_ensure_model (FontViewApplication *self)
 {
+    if (self->model != NULL)
+        return;
+
     self->model = font_view_model_new ();
     g_signal_connect (self->model, "config-changed",
                       G_CALLBACK (font_model_config_changed_cb), self);