bug#70840: 29.3; ERC 5.5.0.29.1: erc-kill-buffer-on-part kills server buffer

[J.P.]

"J.P." <jp@neverwas.me> writes:

> After thinking a bit more on this, I've flip-flopped entirely on the
> notion of running `erc-part-hook' in `erc-kill-channel' and inhibiting
> it in `erc-server-PART' with a would-be null buffer argument. Basically,
> I've come to believe the current faulty behavior has been around too
> long to justify such a change in the name of fixing a bug that's only
> tangentially related. Instead, I think we should introduce a flag that
> `erc-kill-channel-hook' members can use to detect when `erc-server-PART'
> is killing a buffer on behalf of the option `erc-kill-buffer-on-part'.
> Updated patch attached. Thanks.

I've installed something similar as

  cf7cc4c630a Don't kill server buffer with erc-kill-buffer-on-part

Thanks and closing.