Fix knotes to not close notes during saving session.

This closes Bug 987
(cherry picked from commit c48253af15)

knotes/knote.cpp

@@ -1267,6 +1267,8 @@ void KNote::resizeEvent( TQResizeEvent *qre )
 
 void KNote::closeEvent( TQCloseEvent *event )
 {
+    if(kapp->sessionSaving())
+        return;
     event->ignore(); //We don't want to close (and delete the widget). Just hide it
     slotClose();
 }