From b279b5e2802c1a938b0ab2e07f8f4734387e0c69 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>
---
 src/multimedia/effects/qsamplecache_p.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/multimedia/effects/qsamplecache_p.cpp b/src/multimedia/effects/qsamplecache_p.cpp
index 69c8d66c..1a06cd17 100644
--- a/src/multimedia/effects/qsamplecache_p.cpp
+++ b/src/multimedia/effects/qsamplecache_p.cpp
@@ -282,8 +282,11 @@ void QSample::release()
 // must be called locked.
 void QSample::cleanup()
 {
-    m_waveDecoder->deleteLater();
-    m_stream->deleteLater();
+    if (m_waveDecoder)
+        m_waveDecoder->deleteLater();
+    if (m_stream)
+        m_stream->deleteLater();
+
     m_waveDecoder = 0;
     m_stream = 0;
 }