"NULL !=" = NULL

src/ports/SkOSFile_win.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkOSFile.h"
 
 #include "SkTFitsIn.h"
@@ skipping 48 matching lines @@
            && aID.fLsbSize == bID.fLsbSize
            && aID.fMsbSize == bID.fMsbSize
            && aID.fVolume == bID.fVolume;
 }
 
 class SkAutoNullKernelHandle : SkNoncopyable {
 public:
     SkAutoNullKernelHandle(const HANDLE handle) : fHandle(handle) { }
     ~SkAutoNullKernelHandle() { CloseHandle(fHandle); }
     operator HANDLE() const { return fHandle; }
-    bool isValid() const { return NULL != fHandle; }
+    bool isValid() const { return SkToBool(fHandle); }
 private:
     HANDLE fHandle;
 };
 typedef SkAutoNullKernelHandle SkAutoWinMMap;
 
 void sk_fmunmap(const void* addr, size_t) {
     UnmapViewOfFile(addr);
 }
 
 void* sk_fdmmap(int fileno, size_t* length) {
@@ skipping 33 matching lines @@
 }
 
 void* sk_fmmap(SkFILE* f, size_t* length) {
     int fileno = sk_fileno(f);
     if (fileno < 0) {
         return NULL;
     }
 
     return sk_fdmmap(fileno, length);
 }