https://bugs.winehq.org/show_bug.cgi?id=51671
--- Comment #4 from Rafał Mużyło galtgendo@o2.pl --- zf:
If I were to make a guess, this might be the very same problem I've asked you awhile ago (at wine 6.12) in the chat and you gave me a patch back then (one for WS_getsockopt, skipping early if socket_list_find fails).