adb: fix test_adb.py's adb server spawning on Windows.

import socket

import struct

import subprocess

import sys

import threading

import time

import unittest

    subprocess.check_output(["adb", "-P", str(port), "kill-server"],

                            stderr=subprocess.STDOUT)

    read_pipe, write_pipe = os.pipe()

    if sys.platform == "win32":

        import msvcrt

        write_handle = msvcrt.get_osfhandle(write_pipe)

        os.set_handle_inheritable(write_handle, True)

        reply_fd = str(write_handle)

    else:

        os.set_inheritable(write_pipe, True)

        reply_fd = str(write_pipe)

    proc = subprocess.Popen(["adb", "-L", "tcp:localhost:{}".format(port),

                             "fork-server", "server",

                             "--reply-fd", str(write_pipe)], close_fds=False)

                             "--reply-fd", reply_fd], close_fds=False)

    try:

        os.close(write_pipe)

        greeting = os.read(read_pipe, 1024)