From f2237b2e66fe21107293ac00eef0acc259880a92 Mon Sep 17 00:00:00 2001
From: Michael Goddard <michael.goddard@nokia.com>
Date: Fri, 18 Nov 2011 12:30:42 +1000
Subject: [PATCH] If the sample hasn't been loaded, don't try and delete
 things.

Causes entirely reasonable warnings from QCoreApplication::postEvents,
when calling deleteLater on a null pointer.

Change-Id: I5f1fa526b2d57844b9c0d2e634d434e2f7867bdf
Reviewed-by: Ling Hu <ling.hu@nokia.com>