Resolves: #i122576# Reset the docking area acceptor in the destructor

(cherry picked from commit 0e90517f)

Conflicts:
	framework/source/layoutmanager/layoutmanager.cxx

Change-Id: Ib053a1b474434f81608a04ca0d30dd32fe410e5a

framework/source/layoutmanager/layoutmanager.cxx

@@ -155,6 +155,7 @@ LayoutManager::~LayoutManager()
 {
     Application::RemoveEventListener( LINK( this, LayoutManager, SettingsChanged ) );
     m_aAsyncLayoutTimer.Stop();
+    setDockingAreaAcceptor(NULL);
     delete m_pGlobalSettings;
 }