Fix NPE when no Callback is defined FIXES #772
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@ -226,7 +226,10 @@ public final class UserConnection implements ProxiedPlayer
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@Override
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public void operationComplete(ChannelFuture future) throws Exception
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{
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callback.done( future.isSuccess(), future.cause() );
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if ( callback != null )
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{
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callback.done( future.isSuccess(), future.cause() );
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}
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if ( !future.isSuccess() )
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{
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