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Eric Anderson e998955d1d xds: Avoid NPE from update after removing subscriptions 
This fixes a regression in commit e1ad984. I'd create a test, but the
NPE gets thrown away in the context of the current test setup so can't
be created as quickly as we'd like to fix this. I have manually tested
in a custom reproduction to confirm it resolves the NPE.

Seen at b/248326695

```
java.lang.AssertionError: java.lang.NullPointerException
        at io.grpc.xds.ClientXdsClient$1.uncaughtException(ClientXdsClient.java:89)
        at io.grpc.SynchronizationContext.drain(SynchronizationContext.java:97)
        at io.grpc.SynchronizationContext.execute(SynchronizationContext.java:127)
        at io.grpc.xds.ClientXdsClient.cancelXdsResourceWatch(ClientXdsClient.java:327)
        at io.grpc.xds.ClusterResolverLoadBalancer$ClusterResolverLbState$EdsClusterState.shutdown(ClusterResolverLoadBalancer.java:378)
        at io.grpc.xds.ClusterResolverLoadBalancer$ClusterResolverLbState.shutdown(ClusterResolverLoadBalancer.java:206)
        at io.grpc.util.GracefulSwitchLoadBalancer.shutdown(GracefulSwitchLoadBalancer.java:195)
        at io.grpc.xds.ClusterResolverLoadBalancer.shutdown(ClusterResolverLoadBalancer.java:141)
        at io.grpc.xds.CdsLoadBalancer2$CdsLbState.shutdown(CdsLoadBalancer2.java:136)
        at io.grpc.xds.CdsLoadBalancer2.shutdown(CdsLoadBalancer2.java:110)
        at io.grpc.util.GracefulSwitchLoadBalancer.shutdown(GracefulSwitchLoadBalancer.java:195)
        at io.grpc.xds.ClusterManagerLoadBalancer$ChildLbState.shutdown(ClusterManagerLoadBalancer.java:256)
        at io.grpc.xds.ClusterManagerLoadBalancer.shutdown(ClusterManagerLoadBalancer.java:138)
        at io.grpc.internal.AutoConfiguredLoadBalancerFactory$AutoConfiguredLoadBalancer.shutdown(AutoConfiguredLoadBalancerFactory.java:164)
        at io.grpc.internal.ManagedChannelImpl.shutdownNameResolverAndLoadBalancer(ManagedChannelImpl.java:381)
        at io.grpc.internal.ManagedChannelImpl.access$8200(ManagedChannelImpl.java:118)
        at io.grpc.internal.ManagedChannelImpl$DelayedTransportListener.transportTerminated(ManagedChannelImpl.java:2174)
        at io.grpc.internal.DelayedClientTransport$3.run(DelayedClientTransport.java:122)
        at io.grpc.SynchronizationContext.drain(SynchronizationContext.java:95)
        at io.grpc.SynchronizationContext.execute(SynchronizationContext.java:127)
        at io.grpc.internal.ManagedChannelImpl$RealChannel.shutdown(ManagedChannelImpl.java:1057)
        at io.grpc.internal.ManagedChannelImpl.shutdown(ManagedChannelImpl.java:817)
        at io.grpc.internal.ManagedChannelImpl.shutdownNow(ManagedChannelImpl.java:837)
        at io.grpc.internal.ManagedChannelImpl.shutdownNow(ManagedChannelImpl.java:117)
        at io.grpc.internal.ForwardingManagedChannel.shutdownNow(ForwardingManagedChannel.java:52)
        at io.grpc.internal.ManagedChannelOrphanWrapper.shutdownNow(ManagedChannelOrphanWrapper.java:65)
        at io.grpc.testing.integration.GrpclbFallbackTestClient.tearDown(GrpclbFallbackTestClient.java:178)
        at io.grpc.testing.integration.GrpclbFallbackTestClient.main(GrpclbFallbackTestClient.java:67)
Caused by: java.lang.NullPointerException
        at io.grpc.xds.ClientXdsClient.handleResourceResponse(ClientXdsClient.java:179)
        at io.grpc.xds.AbstractXdsClient$AbstractAdsStream.handleRpcResponse(AbstractXdsClient.java:358)
        at io.grpc.xds.AbstractXdsClient$AdsStreamV3$1$1.run(AbstractXdsClient.java:511)
        at io.grpc.SynchronizationContext.drain(SynchronizationContext.java:95)
        ... 26 more
```
 		2022-09-26 16:37:37 -07:00
..
src xds: Avoid NPE from update after removing subscriptions 2022-09-26 16:37:37 -07:00
third_party xds: Update xDS protos (#9223) 2022-05-27 15:56:31 -07:00
BUILD.bazel repositories.bzl: Use valid target name for services/xds 2022-08-02 10:28:44 -07:00
build.gradle Swap Animalsniffer to Java 8 and Android 19 2022-08-10 12:41:57 -07:00