FWL refcounts never incremented (part 1)

xfa/src/fxfa/src/app/xfa_fffield.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../foxitlib.h"
 #include "../common/xfa_common.h"
 #include "xfa_ffwidget.h"
 #include "xfa_fffield.h"
@@ skipping 109 matching lines @@
 FX_BOOL CXFA_FFField::IsLoaded() {
   return m_pNormalWidget != NULL && CXFA_FFWidget::IsLoaded();
 }
 FX_BOOL CXFA_FFField::LoadWidget() {
   SetFWLThemeProvider();
   m_pDataAcc->LoadCaption();
   LayoutWidget();
   return TRUE;
 }
 void CXFA_FFField::UnloadWidget() {
-  if (m_pNormalWidget) {
-    m_pNormalWidget->Release();
-    m_pNormalWidget = NULL;
-  }
+  delete m_pNormalWidget;
+  m_pNormalWidget = nullptr;
 }
 void CXFA_FFField::SetEditScrollOffset() {
   XFA_ELEMENT eType = m_pDataAcc->GetUIType();
   if (eType == XFA_ELEMENT_TextEdit || eType == XFA_ELEMENT_NumericEdit ||
       eType == XFA_ELEMENT_PasswordEdit) {
     FX_FLOAT fScrollOffset = 0;
     CXFA_FFField* pPrev = static_cast<CXFA_FFField*>(GetPrev());
     if (pPrev) {
       CFX_RectF rtMargin;
       m_pDataAcc->GetUIMargin(rtMargin);
@@ skipping 699 matching lines @@
       break;
     }
     default: {}
   }
   return FWL_ERR_Succeeded;
 }
 FWL_ERR CXFA_FFField::OnDrawWidget(CFX_Graphics* pGraphics,
                                    const CFX_Matrix* pMatrix) {
   return FWL_ERR_Succeeded;
 }