Allow disabling cookie jar

[ngbinh]

since d4f1e58 ,I cannot disable CookieStore by new DefaultAsyncHttpClientConfig.Builder() .setCookieStore(null) ... .build(). There are many usecases where we do not want ahc to handle Cookies.

I am wondering if there should be a more official way of disabling cookie or at least adding a null check here

async-http-client/client/src/main/java/org/asynchttpclient/DefaultAsyncHttpClient.java

Line 96 in 45b4561

final int cookieStoreCount = config.getCookieStore().incrementAndGet();

[slandelle]

A regression indeed, thanks for reporting.

[ngbinh]

Thanks!