474 Validate JS5 Version

[JayArrowz]

NetScape/NetScape.Modules.FourSevenFour.LoginProtocol/Handlers/HandshakeDecoder.cs

Line 54 in 12f629d

 _ = ctx.Channel.WriteAndFlushAsync(ctx.Allocator.Buffer(1).WriteByte((int)FourSevenFourLoginStatus.StatusExchangeData));