keepalive requests are terminated when they shouldn't be?

[smaug----]

https://fetch.spec.whatwg.org/#fetch-groups says
"whose request’s done flag is unset or keepalive is false"

I think that should use "and", not "or". We don't want to cancel not-done keepalives there, I believe.

[annevk]

@noamr maybe fix this as part of #1647 or rather after? I believe that PR is changing this line already.

I went back through blame when this was first mentioned on Chat and I believe it's always been wrong.

[noamr]

@noamr maybe fix this as part of #1647 or rather after? I believe that PR is changing this line already.

I went back through blame when this was first mentioned on Chat and I believe it's always been wrong.

Done. That PR is ready for review.