CVE-2021-4236: Websocket requests did not call AuthenticateMethod

Depending on implementation, a denial-of-service or privilege escalation vulnerability may occur in software that uses the github.com/ecnepsnai/web package with Web Sockets that have an AuthenticateMethod.

The AuthenticateMethod is not called, and UserData will be nil in request methods. Attempts to read the UserData may result in a panic.

This issue only affects web sockets where an AuthenticateMethod is supplied to the handle options. Users who do not use web sockets, or users who do not require authentication are not at risk.