Panic when get torrent stats

[monkeyWie]

When I call the torrent.Stats() method, there is a certain probability of panic:

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x18 pc=0x7ffce875243d]

goroutine 2546 [running]:
github.com/anacrolix/torrent.webrtcNetConn.RemoteAddr({{0x7ffce8da1f40, 0xc0000290c0}, {{0xc0019f1600, 0x1f}, 0x0, {0xaf, 0x30, 0x26, 0x3c, 0x30, ...}, ...}})
	C:/Users/runneradmin/go/pkg/mod/github.com/anacrolix/[email protected]/webrtc.go:56 +0x1d
github.com/anacrolix/torrent.(*Torrent).numTotalPeers(0xc000174a88)
	C:/Users/runneradmin/go/pkg/mod/github.com/anacrolix/[email protected]/torrent.go:2204 +0x95
github.com/anacrolix/torrent.(*Torrent).statsLocked(0xc000174a88)
	C:/Users/runneradmin/go/pkg/mod/github.com/anacrolix/[email protected]/torrent.go:2188 +0xb4
github.com/anacrolix/torrent.(*Torrent).Stats(0xc000174a88)
	C:/Users/runneradmin/go/pkg/mod/github.com/anacrolix/[email protected]/torrent.go:2181 +0xba

[anacrolix]

Could you try https://github.com/anacrolix/torrent/tree/issue-972?

[monkeyWie]

I can't reproduce this problem stably, can you release a new version for this? if it happens again, we can reopen it. Thanks!

[anacrolix]

Yes I have release v1.57.0.