go -- encoding/xml: infinite loop when using xml.NewTokenDecoder with a custom TokenReader; archive/zip: panic when calling Reader.Open

The Go project reports:

The Decode, DecodeElement, and Skip methods of an xml.Decoder
provided by xml.NewTokenDecoder may enter an infinite loop when
operating on a custom xml.TokenReader which returns an EOF in the
middle of an open XML element.

The Reader.Open API, new in Go 1.16, will panic when used on a ZIP
archive containing files that start with “…/”.