Re-enable MSVC warning 4702

third_party/base/logging.h

 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PDFIUM_THIRD_PARTY_BASE_LOGGING_H_
 #define PDFIUM_THIRD_PARTY_BASE_LOGGING_H_
 
 #include <assert.h>
 #include <stdlib.h>
 
-#define CHECK(condition)                                                \
-  if (!(condition)) {                                                   \
-    abort();                                                            \
-    *(reinterpret_cast<volatile char*>(NULL) + 42) = 0x42;              \
+#ifndef _WIN32
+#define NULL_DEREF_IF_POSSIBLE \
+  *(reinterpret_cast<volatile char*>(NULL) + 42) = 0x42;
+#else
+#define NULL_DEREF_IF_POSSIBLE
+#endif
+
+#define CHECK(condition)   \
+  if (!(condition)) {      \
+    abort();               \
+    NULL_DEREF_IF_POSSIBLE \
   }
 
 #define NOTREACHED() assert(false)
 
 #endif  // PDFIUM_THIRD_PARTY_BASE_LOGGING_H_