Suggest stable pick for nfnetlink_queue memory leak

Hi,

I was running kmemleak on a kernel based on 4.4.64 and I noticed that
my memory leak was fixed by commit b18bcb0019cf ("netfilter:
nfnetlink_queue: fix memory leak when attach expectation
successfully").  It seems like perhaps this should go to linux-stable?
 It's not a huge leak, but the fix is simple.

It looks as if the leak has existed since commit bd0779370588
("netfilter: nfnetlink_queue: allow to attach expectations to
conntracks")

Thanks!

-Doug