Fixes for re-enabling more MSVC level 4 warnings: pdfium/ edition

samples/pdfium_test.cc

 // Copyright (c) 2010 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.
 
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <list>
@@ skipping 212 matching lines @@
 
   for (int i = 0; i < page_count; ++i) {
     FPDF_PAGE page = FPDF_LoadPage(doc, i);
     FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
     FORM_OnAfterLoadPage(page, form);
     FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_OPEN);
 
     int width = static_cast<int>(FPDF_GetPageWidth(page));
     int height = static_cast<int>(FPDF_GetPageHeight(page));
     FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0);
-    FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 255, 255, 255, 255);
+    FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
 
     FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
     FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
     if (write_images) {
       const char* buffer = reinterpret_cast<const char*>(
           FPDFBitmap_GetBuffer(bitmap));
       int stride = FPDFBitmap_GetStride(bitmap);
       WritePpm(name, i, buffer, stride, width, height);
     }
 
@@ skipping 52 matching lines @@
       RenderPdf(filename, pBuf, len, write_images);
     }
     free(pBuf);
   }
 
   FPDF_DestroyLibrary();
 
   return 0;
 }