Enable syscall_test on windows.

src/shared/platform/win/nacl_host_dir_types.h

 /*
  * Copyright 2008 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
 /*
  * NaCl Service Runtime.  Directory descriptor abstraction.
  */
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_WIN_NACL_HOST_DIR_TYPES_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_WIN_NACL_HOST_DIR_TYPES_H_
 
 #include <windows.h>
 
 #include "native_client/src/shared/platform/nacl_sync.h"
 #include "native_client/src/trusted/service_runtime/nacl_config.h"
 
 struct NaClHostDir {
   struct NaClMutex  mu;
   /*
    * Windows HANDLEs are used by FindFirst/FindNext/FindClose
    */
   HANDLE            handle;
   /*
    * The data found from the previous call is in this slot.
    */
-  WIN32_FIND_DATA   find_data;
+  WIN32_FIND_DATAW  find_data;
   /*
    * Monotonic count returned in dirents.
    */
   int               off;
   /*
    * Set when no more files can be found, i.e., FindNextFile has
    * already returned ERROR_NO_MORE_FILES, so find_data is no longer
    * valid.
    */
   int               done;
   /*
    * Pattern representing the directory we are listing.
    * This is cached in the descriptor so that it can be restarted
    * (i.e. rewinddir)
    */
   wchar_t           pattern[NACL_CONFIG_PATH_MAX + 1];
 };
 
 #endif  /* NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_WIN_NACL_HOST_DIR_TYPES_H_ */