Panic in server

[ekr]

Got this connecting with Firefox..

2017/01/24 12:58:51 Listening on port 4430
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x8 pc=0x1171e4]

goroutine 1 [running]:
panic(0x3e4260, 0xc82000a0f0)
/usr/local/Cellar/go/1.6/libexec/src/runtime/panic.go:464 +0x3e6
github.com/bifurcation/mint.(*ServerHandshake).HandleClientHello(0xc820436000, 0xc820427520, 0x661174, 0x2, 0x2, 0x6612a0, 0x4, 0x4, 0x6613f8, 0x6, ...)
/Users/ekr/dev/go/src/github.com/bifurcation/mint/handshake.go:849 +0x2634
github.com/bifurcation/mint.(*Conn).serverHandshake(0xc82040b950, 0x0, 0x0)
/Users/ekr/dev/go/src/github.com/bifurcation/mint/conn.go:671 +0x53c
github.com/bifurcation/mint.(*Conn).Handshake(0xc82040b950, 0x0, 0x0)
/Users/ekr/dev/go/src/github.com/bifurcation/mint/conn.go:469 +0x321
github.com/bifurcation/mint.(*Listener).Accept(0xc820427440, 0x7a9a60, 0xc820028050, 0x0, 0x0)
/Users/ekr/dev/go/src/github.com/bifurcation/mint/tls.go:42 +0xbf
net/http.(*Server).Serve(0xc820413480, 0x7a9a00, 0xc820427440, 0x0, 0x0)
/usr/local/Cellar/go/1.6/libexec/src/net/http/server.go:2117 +0x129
main.main()
/Users/ekr/dev/go/src/github.com/bifurcation/mint/bin/mint-server-https/main.go:123 +0x1006
exit status 2

[alexwebr]

At least for me, this is happening because cert is nil when doing len(cert.Chain):

    certificate := &CertificateBody{
      CertificateList: make([]CertificateEntry, len(cert.Chain)),
    }