BUGFIX: Avoid possible crash on exit when the IP filter is enabled (closes #695945)

src/filterparserthread.h

@@ -88,6 +88,7 @@ protected:
         }
       }
     }
+    if(abort) return;
     s->set_ip_filter(filter);
     qDebug("IP Filter thread: finished parsing, filter applied");
   }

src/qtlibtorrent/qbtsession.cpp

@@ -155,9 +155,6 @@ QBtSession::~QBtSession() {
 #endif
   saveSessionState();
   saveFastResumeData();
-  qDebug("Deleting the session");
-  delete s;
-  qDebug("Session deleted");
   // Delete our objects
   if(m_tracker)
     delete m_tracker;
@@ -174,6 +171,8 @@ QBtSession::~QBtSession() {
     delete httpServer;
   if(timerETA)
     delete timerETA;
+  qDebug("Deleting the session");
+  delete s;
   qDebug("BTSession destructor OUT");
 }