Return bool rather than bitwise-and for FX_BOOL

core/fpdfapi/fpdf_render/fpdf_render.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 "core/fpdfapi/fpdf_render/render_int.h"
 
 #include "core/fpdfapi/fpdf_font/cpdf_type3char.h"
 #include "core/fpdfapi/fpdf_font/cpdf_type3font.h"
@@ skipping 732 matching lines @@
           format == PDFCS_DEVICEN) {
         blend_type = FXDIB_BLEND_DARKEN;
       }
       pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
     }
   }
   if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL &&
       !bTextClip && !bGroupTransparent) {
     return FALSE;
   }
-  FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED;
+  bool isolated = !!(Transparency & PDFTRANS_ISOLATED);
   if (m_bPrint) {
     FX_BOOL bRet = FALSE;
     int rendCaps = m_pDevice->GetRenderCaps();
     if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
         (rendCaps & FXRC_BLEND_MODE)) {
       int oldBlend = m_curBlend;
       m_curBlend = blend_type;
       bRet = DrawObjWithBlend(pPageObj, pObj2Device);
       m_curBlend = oldBlend;
     }
@@ skipping 523 matching lines @@
   m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions,
                             &m_Matrix);
   return TRUE;
 }
 void CPDF_ScaledRenderBuffer::OutputToDevice() {
   if (m_pBitmapDevice) {
     m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left,
                              m_Rect.top, m_Rect.Width(), m_Rect.Height());
   }
 }