[Modify] Add a null check

This commit is contained in:
sta 2021-05-13 19:44:02 +09:00
parent df30241fe3
commit 967097ea9a

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@ -246,6 +246,9 @@ namespace WebSocketSharp.Net
internal void Unregister () internal void Unregister ()
{ {
if (_listener == null)
return;
_listener.UnregisterContext (this); _listener.UnregisterContext (this);
} }