[jdarwood007]

Fixes #9871

[albertlast]

I don't think this changes anything on 3.0. CurlFetcher::result() on release-3.0 already returns early when nothing was recorded:

$max_result = \count($this->response) - 1;

if ($max_result < 0) {
	return null;
}

Past that point $this->response[$max_result] always exists, so the added ?? null can never apply. As the issue itself notes, the $txt half of #9871 does not affect 3.0 either. Is there a case this covers that I'm missing?

[jdarwood007]

I think its still a worthwhile check to ensure that we somehow don't escape the upper boundary either. I can't say how it can or provide examples.