Getting uncaught error in none-integrated mode after the connection reset

[dkonasov]

From logs:

/node/node_modules/passport-windowsauth/lib/LdapLookup.js:24
    if (e.errno === 'ECONNRESET' && self._client.reconnect) return;
                                         ^

TypeError: Cannot read property '_client' of undefined
    at Client.<anonymous> (/node/node_modules/passport-windowsauth/lib/LdapLookup.js:24:42)
    at Client.emit (events.js:180:13)
    at Socket.onSocketError (/node/node_modules/ldapjs/lib/client/client.js:1169:12)
    at Socket.emit (events.js:180:13)
    at emitErrorNT (internal/streams/destroy.js:64:8)
    at process._tickCallback (internal/process/next_tick.js:178:19)

[dkonasov]

Created PR to fix this.
#58