Return bool rather than bitwise-and for FX_BOOL

xfa/fwl/basewidget/fwl_listboximp.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 "xfa/fwl/basewidget/fwl_listboximp.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/basewidget/fwl_comboboximp.h"
@@ skipping 381 matching lines @@
 }
 void CFWL_ListBoxImp::ClearSelection() {
   FX_BOOL bMulti =
       m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection;
   IFWL_ListBoxDP* pData =
       static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
   int32_t iCount = pData->CountItems(m_pInterface);
   for (int32_t i = 0; i < iCount; i++) {
     FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, i);
     uint32_t dwState = pData->GetItemStyles(m_pInterface, hItem);
-    FX_BOOL bFindSel = dwState & FWL_ITEMSTATE_LTB_Selected;
-    if (!bFindSel) {
+    if (!(dwState & FWL_ITEMSTATE_LTB_Selected))
       continue;
-    }
     SetSelectionDirect(hItem, FALSE);
-    if (!bMulti) {
+    if (!bMulti)
       return;
-    }
   }
 }
 void CFWL_ListBoxImp::SelectAll() {
   FX_BOOL bMulti =
       m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection;
   if (!bMulti) {
     return;
   }
   IFWL_ListBoxDP* pData =
       static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
@@ skipping 822 matching lines @@
     pScrollBar->SetTrackPos(fPos);
     m_pOwner->Repaint(&m_pOwner->m_rtClient);
   }
   return TRUE;
 }
 void CFWL_ListBoxImpDelegate::DispatchSelChangedEv() {
   CFWL_EvtLtbSelChanged ev;
   ev.m_pSrcTarget = m_pOwner->m_pInterface;
   m_pOwner->DispatchEvent(&ev);
 }