Remove NULL in xfa/

xfa/fgas/crt/fgas_system.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/fgas/crt/fgas_system.h"
 
 #include <algorithm>
 
 #include "core/fxcrt/include/fx_system.h"
 
 namespace {
 
 inline FX_BOOL FX_isupper(int32_t ch) {
   return ch >= 'A' && ch <= 'Z';
 }
 
 inline int32_t FX_tolower(int32_t ch) {
   return FX_isupper(ch) ? (ch + 0x20) : ch;
 }
 
 }  // namespace
 
 int32_t FX_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count) {
-  ASSERT(s1 != NULL && s2 != NULL && count > 0);
+  ASSERT(s1 && s2 && count > 0);
   FX_WCHAR wch1 = 0;
   FX_WCHAR wch2 = 0;
   while (count-- > 0) {
     wch1 = (FX_WCHAR)FX_tolower(*s1++);
     wch2 = (FX_WCHAR)FX_tolower(*s2++);
     if (wch1 != wch2) {
       break;
     }
   }
   return wch1 - wch2;
 }
 
 FX_FLOAT FX_wcstof(const FX_WCHAR* pwsStr, int32_t iLength, int32_t* pUsedLen) {
-  ASSERT(pwsStr != NULL);
+  ASSERT(pwsStr);
   if (iLength < 0) {
     iLength = FXSYS_wcslen(pwsStr);
   }
   if (iLength == 0) {
     return 0.0f;
   }
   int32_t iUsedLen = 0;
   FX_BOOL bNegtive = FALSE;
   switch (pwsStr[iUsedLen]) {
     case '-':
@@ skipping 22 matching lines @@
       } else {
         break;
       }
     }
   }
   if (pUsedLen) {
     *pUsedLen = iUsedLen;
   }
   return bNegtive ? -fValue : fValue;
 }