Fix crash in super splity linker,

tools/win/split_link/split_link.cc

 // Copyright (c) 2013 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 <windows.h>
 #include <shlwapi.h>
 
 #include <stdio.h>
 #include <stdlib.h>
 
@@ skipping 164 matching lines @@
   link_binary.push_back(original_link);
   RunLinker(link_binary, msg);
 }
 
 static void Fallback() {
   Fallback(NULL);
 }
 
 static unsigned char* SlurpFile(const wchar_t* path, size_t* length) {
   HANDLE file = CreateFile(
-      path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_ALWAYS, 0, NULL);
+      path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
   if (file == INVALID_HANDLE_VALUE)
     Fallback(L"couldn't open file");
   LARGE_INTEGER file_size;
   if (!GetFileSizeEx(file, &file_size))
     Fallback(L"couldn't get file size");
   *length = static_cast<size_t>(file_size.QuadPart);
   unsigned char* buffer = static_cast<unsigned char*>(malloc(*length));
-  if (!ReadFile(file, buffer, *length, NULL, NULL))
+  DWORD bytes_read = 0;
+  if (!ReadFile(file, buffer, *length, &bytes_read, NULL))
     Fallback(L"couldn't read file");
   return buffer;
 }
 
 static bool SplitLinkRequested(const wchar_t* rsp_path) {
   size_t length;
   unsigned char* data = SlurpFile(rsp_path, &length);
   bool flag_found = false;
   if (data[0] == 0xff && data[1] == 0xfe) {
     // UTF-16LE
@@ skipping 44 matching lines @@
   if (SplitLinkRequested(&argv[rsp_file_index][1])) {
     vector<wstring> link_binary;
     link_binary.push_back(WPYTHON_PATH);
     link_binary.push_back(WSPLIT_LINK_SCRIPT_PATH);
     RunLinker(link_binary, NULL);
   }
 
   // Otherwise, run regular linker silently.
   Fallback();
 }