Get rid of NULLs in core/

core/fxge/win32/fx_win32_dwrite.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/fxge/include/fx_ge.h"
 
 #if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_
 #include <dwrite.h>
@@ skipping 28 matching lines @@
   virtual ULONG STDMETHODCALLTYPE AddRef();
   virtual ULONG STDMETHODCALLTYPE Release();
   virtual HRESULT STDMETHODCALLTYPE
   ReadFileFragment(void const** fragmentStart,
                    UINT64 fileOffset,
                    UINT64 fragmentSize,
                    OUT void** fragmentContext);
   virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext);
   virtual HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64* fileSize);
   virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64* lastWriteTime);
-  bool IsInitialized() { return resourcePtr_ != NULL; }
+  bool IsInitialized() { return !!resourcePtr_; }
 
  private:
   ULONG refCount_;
   void const* resourcePtr_;
   DWORD resourceSize_;
 };
 class CDwFontFileLoader final : public IDWriteFontFileLoader {
  public:
   virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid,
                                                    void** ppvObject);
   virtual ULONG STDMETHODCALLTYPE AddRef();
   virtual ULONG STDMETHODCALLTYPE Release();
   virtual HRESULT STDMETHODCALLTYPE
   CreateStreamFromKey(void const* fontFileReferenceKey,
                       UINT32 fontFileReferenceKeySize,
                       OUT IDWriteFontFileStream** fontFileStream);
 
   static IDWriteFontFileLoader* GetLoader() {
     if (!instance_) {
       instance_ = new CDwFontFileLoader();
     }
     return instance_;
   }
-  static bool IsLoaderInitialized() { return instance_ != NULL; }
+  static bool IsLoaderInitialized() { return !!instance_; }
 
  private:
   CDwFontFileLoader();
   ULONG refCount_;
   static IDWriteFontFileLoader* instance_;
 };
 class CDwFontContext {
  public:
   CDwFontContext(IDWriteFactory* dwriteFactory);
   ~CDwFontContext();
@@ skipping 317 matching lines @@
                                     textColor);
   if (FAILED(hr)) {
     return hr;
   }
   pBitmap_->CompositeBitmap(text_bbox.left, text_bbox.top, text_bbox.Width(),
                             text_bbox.Height(), &dib, text_bbox.left,
                             text_bbox.top, FXDIB_BLEND_NORMAL, pClipRgn);
   return hr;
 }
 #endif