Problem with CLogViewEvent and CLogFilter cleanup

//declarations from header file
CLogFilter *m_pLogFilter;
CLogClient *m_pLogClient;
CLogViewEvent *m_pLogView;
CLogEvent *m_pEvent;
RFs iFs;


//some functions bodies from source file
void CCallLog::ConstructL()
{
m_pEvent = CLogEvent::NewL();

iFs.Connect();
m_pLogClient = CLogClient::NewL(iFs);
m_pLogView = CLogViewEvent::NewL(*m_pLogClient,CActive::EPriorityStandard );

m_pLogFilter = CLogFilter::NewL();
}


void CCallLog::Refresh(int _type)
{
switch(_type)
{
case CALL_LOG_TYPE_INCOMING:
m_pLogFilter->SetDirection(_L("Incoming"));
break;
case CALL_LOG_TYPE_OUTGOING:
m_pLogFilter->SetDirection(_L("Outgoing"));
break;
case CALL_LOG_TYPE_MISSED:
m_pLogFilter->SetDirection(_L("Missed"));
break;
};

m_pLogView->Cancel();

m_pLogView->SetFilterL(*m_pLogFilter, iStatus);
SetActive();
}


void CCallLog::RunL()
{
if( iStatus == KErrNone)
{
m_pEvent = (CLogEvent*)&m_pLogView->Event();
}
}


CCallLog::~CCallLog()
{
m_pLogView->Cancel();
m_pLogClient->Cancel();
CActive::Cancel();

m_pCB=0;

if(m_pEvent) {delete m_pEvent;}
m_pEvent=0;

if(m_pLogFilter) delete m_pLogFilter;
m_pLogFilter=0;

if(m_pLogView) delete m_pLogView;
m_pLogView=0;

if(m_pLogClient) {delete m_pLogClient;}
m_pLogClient=0;

iFs.Close();
}