[gtksourceview] test-widget: unref the GtkSourceFile object

[Sébastien Wilmet <swilmet src gnome org>]

commit eb8f3ca9d10aa4c020f2de884da3eb9e9b666e86
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Tue Sep 9 23:35:27 2014 +0200

    test-widget: unref the GtkSourceFile object
    
    It's just a test, but maybe some developers will read the code to create
    an application...

 tests/test-widget.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/tests/test-widget.c b/tests/test-widget.c
index 5e6fef7..a293701 100644
--- a/tests/test-widget.c
+++ b/tests/test-widget.c
@@ -921,6 +921,7 @@ test_widget_dispose (GObject *object)
        TestWidget *self = TEST_WIDGET (object);
 
        g_clear_object (&self->priv->buffer);
+       g_clear_object (&self->priv->file);
 
        G_OBJECT_CLASS (test_widget_parent_class)->dispose (object);
 }