Fixit: Remove bunch of coverity warnings from chrome/installer/*.

chrome/installer/util/lzma_util.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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 "chrome/installer/util/lzma_util.h"
 
 #include "base/file_util.h"
 #include "base/string_util.h"
 
 extern "C" {
 #include "third_party/lzma_sdk/Archive/7z/7zExtract.h"
@@ skipping 130 matching lines @@
     std::wstring directory = file_util::GetDirectoryFromPath(wfileName);
     file_util::CreateDirectory(directory);
 
     hFile = CreateFile(wfileName.c_str(), GENERIC_WRITE, 0, NULL,
                        CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
     if (hFile == INVALID_HANDLE_VALUE)  {
       ret = GetLastError();
       break;
     }
 
-    WriteFile(hFile, outBuffer + offset, (DWORD) outSizeProcessed,
-              &written, NULL);
-    if (written != outSizeProcessed) {
+    if ((!WriteFile(hFile, outBuffer + offset, (DWORD) outSizeProcessed,
+                    &written, NULL)) ||
+        (written != outSizeProcessed)) {
       ret = GetLastError();
       CloseHandle(hFile);
       break;
     }
 
     if (f->IsLastWriteTimeDefined) {
       if (!SetFileTime(hFile, NULL, NULL,
                        (const FILETIME *)&(f->LastWriteTime))) {
         ret = GetLastError();
         CloseHandle(hFile);
@@ skipping 10 matching lines @@
   SzArDbExFree(&db, allocImp.Free);
   return ret;
 }
 
 void LzmaUtil::CloseArchive() {
   CloseHandle(archive_handle_);
   archive_handle_ = NULL;
 }
 
 }  // namespace installer