Get rid of NULLs in xfa/

fpdfsdk/fpdfdoc_embeddertest.cpp

 // Copyright 2015 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.
 
 #include <string>
 
 #include "core/fxcrt/include/fx_string.h"
 #include "public/fpdf_doc.h"
 #include "public/fpdf_edit.h"
 #include "public/fpdfview.h"
 #include "testing/embedder_test.h"
 #include "testing/fx_string_testhelpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/test_support.h"
 
 class FPDFDocEmbeddertest : public EmbedderTest {};
 
 TEST_F(FPDFDocEmbeddertest, DestGetPageIndex) {
   EXPECT_TRUE(OpenDocument("named_dests.pdf"));
 
-  // NULL FPDF_DEST case.
+  // nullptr FPDF_DEST case.
   EXPECT_EQ(0U, FPDFDest_GetPageIndex(document(), nullptr));
 
   // Page number directly in item from Dests NameTree.
   FPDF_DEST dest = FPDF_GetNamedDestByName(document(), "First");
   EXPECT_TRUE(dest);
   EXPECT_EQ(1U, FPDFDest_GetPageIndex(document(), dest));
 
   // Page number via object reference in item from Dests NameTree.
   dest = FPDF_GetNamedDestByName(document(), "Next");
   EXPECT_TRUE(dest);
@@ skipping 107 matching lines @@
       GetFPDFWideString(L"anything");
   EXPECT_EQ(nullptr, FPDFBookmark_Find(document(), title.get()));
 }
 
 TEST_F(FPDFDocEmbeddertest, DeletePage) {
   EXPECT_TRUE(OpenDocument("hello_world.pdf"));
   EXPECT_EQ(1, FPDF_GetPageCount(document()));
   FPDFPage_Delete(document(), 0);
   EXPECT_EQ(0, FPDF_GetPageCount(document()));
 }