a pair of "cleanups" when deleting a Document

svn path=/trunk/playground/graphics/okular/; revision=630505

core/document.cpp

@@ -660,9 +660,15 @@ Document::Document()
 
 Document::~Document()
 {
+    // stop any audio playback
+    AudioPlayer::instance()->stopPlaybacks();
+
     // delete generator, pages, and related stuff
     closeDocument();
 
+    // delete the bookmark manager
+    delete d->m_bookmarkManager;
+
     // delete the loaded generators
     QHash< QString, GeneratorInfo >::const_iterator it = d->m_loadedGenerators.constBegin(), itEnd = d->m_loadedGenerators.constEnd();
     for ( ; it != itEnd; ++it )