Do not delete referenced MainWindow in document destructor

This resolves Bug 1729

2 files changed, 16 insertions, 3 deletions

diff --git a/lib/kofficecore/KoDocument.cpp b/lib/kofficecore/KoDocument.cpp
index e1422800..67e70ecc 100644
--- a/lib/kofficecore/KoDocument.cpp
+++ b/lib/kofficecore/KoDocument.cpp
@@ -269,6 +269,10 @@ KoDocument::KoDocument( TQWidget * parentWidget, const char *widgetName, TQObjec
 
 KoDocument::~KoDocument()
 {
+    if (!d) {
+        return;
+    }
+
     d->m_autoSaveTimer.stop();
 
     TQPtrListIterator<KoDocumentChild> childIt( d->m_children );
@@ -288,12 +292,12 @@ KoDocument::~KoDocument()
     d->m_children.setAutoDelete( true );
     d->m_children.clear();
 
-    d->m_shells.setAutoDelete( true );
     d->m_shells.clear();
 
     delete d->m_dcopObject;
     delete d->filterManager;
     delete d;
+    d=0L;
     s_documentList->removeRef(this);
     // last one?
     if(s_documentList->isEmpty()) {
diff --git a/lib/kofficecore/KoMainWindow.cpp b/lib/kofficecore/KoMainWindow.cpp
index 18916b57..a2189c88 100644
--- a/lib/kofficecore/KoMainWindow.cpp
+++ b/lib/kofficecore/KoMainWindow.cpp
@@ -184,7 +184,7 @@ public:
 };
 
 KoMainWindow::KoMainWindow( TDEInstance *instance, const char* name )
-    : KParts::MainWindow( name )
+    : KParts::MainWindow( 0, 0L, name )
 {
     setStandardToolBarMenuEnabled(true); // should there be a check for >= 3.1 ?
     Q_ASSERT(instance);
@@ -310,13 +310,19 @@ KoMainWindow::KoMainWindow( TDEInstance *instance, const char* name )
 
 KoMainWindow::~KoMainWindow()
 {
+    if (!d) {
+        return;
+    }
+
     // The doc and view might still exist (this is the case when closing the window)
-    if (d->m_rootDoc)
+    if (d->m_rootDoc) {
         d->m_rootDoc->removeShell(this);
+    }
 
     if (d->m_docToOpen) {
       d->m_docToOpen->removeShell(this);
       delete d->m_docToOpen;
+      d->m_docToOpen=0L;
     }
 
     // safety first ;)
@@ -337,10 +343,13 @@ KoMainWindow::~KoMainWindow()
     {
         //kdDebug(30003) << "Destructor. No more views, deleting old doc " << d->m_rootDoc << endl;
         delete d->m_rootDoc;
+        d->m_rootDoc=0L;
     }
 
     delete d->m_manager;
+    d->m_manager=0L;
     delete d;
+    d=0L;
 }
 
 void KoMainWindow::setRootDocument( KoDocument *doc )