[QUARTZ] Use Interlocked* functions in AddRef and Release (RESEND)

[Alexandre Julliard]

Paul Vriens <Paul.Vriens at xs4all.nl> writes:

>      TRACE("(%p)->()\n", iface);
> -    if (!--This->refCount)
> +    if (!InterlockedDecrement(&This->refCount))
>      {
>          CoTaskMemFree(This->ppFilters);
>          CoTaskMemFree(This);

You also need to store the result of the decrement and have the
function return that value instead of This->refCount, otherwise it's
still not thread-safe.

-- 
Alexandre Julliard
julliard at winehq.org