fix NPE
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@@ -16,6 +16,8 @@ public class PacketInboundHandler extends SimpleChannelInboundHandler<Packet> {
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@Override
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protected void channelRead0(ChannelHandlerContext ctx, Packet packet) {
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if (observedMap.containsKey(packet.getClass())) {
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observedMap.get(packet.getClass()).tryEmitNext(new ChannelContext<>(ctx, packet));
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}
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}
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}
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