const golang.org/x/net/html.whitespaceOrNUL

2 uses

	golang.org/x/net/html (current package)
		parse.go#L2130: const whitespaceOrNUL = whitespace + "\x00"
		parse.go#L2137: 			p.framesetOK = strings.TrimLeft(p.tok.Data, whitespaceOrNUL) == ""