Remove { delete this; } anti-pattern from IXFA_WidgetIterator

fpdfsdk/fpdfformfill.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 "public/fpdf_formfill.h"
 
 #include <memory>
 #include <vector>
@@ skipping 73 matching lines @@
     return -1;
 
   CXFA_FFDocView* pDocView = pPageView->GetDocView();
   if (!pDocView)
     return -1;
 
   CXFA_FFWidgetHandler* pWidgetHandler = pDocView->GetWidgetHandler();
   if (!pWidgetHandler)
     return -1;
 
-  std::unique_ptr<IXFA_WidgetIterator, ReleaseDeleter<IXFA_WidgetIterator>>
-      pWidgetIterator(pPageView->CreateWidgetIterator(
+  std::unique_ptr<IXFA_WidgetIterator> pWidgetIterator(
+      pPageView->CreateWidgetIterator(
           XFA_TRAVERSEWAY_Form,
           XFA_WIDGETFILTER_Viewable | XFA_WIDGETFILTER_AllType));
   if (!pWidgetIterator)
     return -1;
 
   CXFA_FFWidget* pXFAAnnot = pWidgetIterator->MoveToNext();
   while (pXFAAnnot) {
     CFX_RectF rcBBox;
     pXFAAnnot->GetBBox(rcBBox, 0);
     CFX_FloatRect rcWidget(rcBBox.left, rcBBox.top, rcBBox.left + rcBBox.width,
@@ skipping 610 matching lines @@
         pActionHandler->DoAction_Page(action, CPDF_AAction::OpenPage, pSDKDoc);
       }
     } else {
       if (aa.ActionExist(CPDF_AAction::ClosePage)) {
         CPDF_Action action = aa.GetAction(CPDF_AAction::ClosePage);
         pActionHandler->DoAction_Page(action, CPDF_AAction::ClosePage, pSDKDoc);
       }
     }
   }
 }