Cherry-pick usrsctp 7dab23aa0d8db86fedd222a308067439b03fad0f
<rdar://problem/72304588>
Created attachment 416316 [details] Patch
Committed r270894: <https://trac.webkit.org/changeset/270894> All reviewed patches have been landed. Closing bug and clearing flags on attachment 416316 [details].