When getaddrinfo() failed in detect_autoproxyconfig_url_dns(),
an undefined variable is passed to WinHttpDetectAutoProxyConfigUrl(),
causing applications to receive a wrong url.

This is a regression from 4ad4173e.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48349Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>