Remove setting CURLPIPE_MULTIPLEX option. The option is enabled by default since curl 7.62.0 https://curl.se/libcurl/c/CURLMOPT_PIPELINING.html
Created attachment 444507 [details] Patch
Committed r285972 (244369@main): <https://commits.webkit.org/244369@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 444507 [details].
<rdar://problem/85531281>