Fix NPE in seednode.

[ghost]

Fix an NPE which was preventing proper startup.

Dec-04 13:23:31.519 [SeedNodeMain] INFO  b.n.p.p.PeerManager: Num of latestLivePeers=14 
Dec-04 13:23:41.563 [SeedNodeMain] INFO  b.n.p.p.PeerManager: We have 14 connections open. Our limit is 20 
Dec-04 13:25:11.363 [SeedNodeMain] INFO  b.n.p.p.PeerManager: We have 15 connections open. Our limit is 20 
Dec-04 13:25:21.963 [SeedNodeMain] INFO  b.n.p.p.g.RequestDataHandler: A timeout occurred at sending getDataRequest:PreliminaryGetDataRequest(supportedCapabilities=[0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17]) on nodeAddress:jmacx3kp7iku7eod6s4sasvxtdknakbsw2l2us5tyrk3q2634i222zid.onion:8000 
Dec-04 13:25:21.965 [SeedNodeMain] INFO  b.c.a.m.AppSetupWithP2P: onNoSeedNodeAvailable 
Dec-04 13:25:21.965 [SeedNodeMain] INFO  b.c.a.m.AppSetupWithP2P: onBasicServicesInitialized 
Dec-04 13:25:23.139 [SeedNodeMain] ERROR b.c.s.CommonSetup: Uncaught Exception from thread SeedNodeMain 
Dec-04 13:25:23.139 [SeedNodeMain] ERROR b.c.s.CommonSetup: throwableMessage= null 
Dec-04 13:25:23.139 [SeedNodeMain] ERROR b.c.s.CommonSetup: throwableClass= class java.lang.NullPointerException 
Dec-04 13:25:23.214 [SeedNodeMain] ERROR b.c.s.CommonSetup: Stack trace:
java.lang.NullPointerException
        at bisq.core.filter.FilterManager.onAllServicesInitialized(FilterManager.java:163)
        at bisq.core.app.misc.AppSetupWithP2P.onBasicServicesInitialized(AppSetupWithP2P.java:195)
        at bisq.core.app.misc.AppSetupWithP2PAndDAO.onBasicServicesInitialized(AppSetupWithP2PAndDAO.java:90)
        at bisq.core.app.misc.AppSetupWithP2P.lambda$startInitP2PNetwork$2(AppSetupWithP2P.java:104)
        at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:181)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
        at javafx.beans.property.BooleanPropertyBase.fireValueChangedEvent(BooleanPropertyBase.java:104)
        at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:111)
        at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:145)
        at bisq.core.app.misc.AppSetupWithP2P$2.onNoSeedNodeAvailable(AppSetupWithP2P.java:156)
        at java.base/java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:803)
        at java.base/java.util.concurrent.CopyOnWriteArraySet.forEach(CopyOnWriteArraySet.java:425)
        at bisq.network.p2p.P2PService.applyIsBootstrapped(P2PService.java:342)
        at bisq.network.p2p.P2PService.onNoSeedNodeAvailable(P2PService.java:318)
        at bisq.network.p2p.peers.getdata.RequestDataManager$2.onFault(RequestDataManager.java:388)
        at bisq.network.p2p.peers.getdata.RequestDataHandler.handleFault(RequestDataHandler.java:278)
        at bisq.network.p2p.peers.getdata.RequestDataHandler.lambda$requestData$0(RequestDataHandler.java:135)
        at bisq.common.FrameRateTimer.run(FrameRateTimer.java:50)
        at java.base/java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:803)
        at java.base/java.util.concurrent.CopyOnWriteArraySet.forEach(CopyOnWriteArraySet.java:425)
        at bisq.common.MasterTimer$1.lambda$run$0(MasterTimer.java:38)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

[ripcurlx]

utACK