Calling webSocket.isDataPending gives "operation was attempted on something that is not a socket"

[CoderNate]

OS: Windows

The readSet here is static and in similar places where a SocketSet is used there is a call to readSet.reset() prior to calling readSet.add(...). https://github.com/adamdruppe/arsd/blob/f98b5e17d651ee815fd4ce787dac1541f1959f2d/http2.d#L4655-L4658

I'm seeing that isDataPending works okay for the first WebSocket I create in a session but after I close it and create a new WebSocket one of two things happen:

• Calling isDataPending with a timeout just keeps returning false immediately every time it's called
• I get std.socket.SocketOSException@std\socket.d(3488): Socket select error: An operation was attempted on something that is not a socket.

If I add in a call to readSet.reset() then everything seems to work fine.

[adamdruppe]

that's right i am supposed to reset it, i just barely ever use this function so i didn't test it well. pushed fix up.