tree 6db07d5b93f3d4ee25cf6c5186e2c2dff69bf31f
parent 8d16304fe80709e4879fadd398970418ac362897
author Pier Luigi <pierventre@hotmail.com> 1520170243 +0100
committer Charles Chan <rascov@gmail.com> 1520364940 -0800

[CORD-2801] Fix NPE in FlowStatsCollector

java.lang.NullPointerException
  at org.onosproject.provider.of.flow.impl.FlowStatsCollector.stop(FlowStatsCollector.java:96)[180:org.onosproject.onos-providers-openflow-flow:1.12.1.SNAPSHOT]
  at org.onosproject.provider.of.flow.impl.OpenFlowRuleProvider.stopCollectorIfNeeded(OpenFlowRuleProvider.java:263)[180:org.onosproject.onos-providers-openflow-flow:1.12.1.SNAPSHOT]
  at org.onosproject.provider.of.flow.impl.OpenFlowRuleProvider.access$400(OpenFlowRuleProvider.java:112)[180:org.onosproject.onos-providers-openflow-flow:1.12.1.SNAPSHOT]
  at org.onosproject.provider.of.flow.impl.OpenFlowRuleProvider$InternalFlowProvider.switchRemoved(OpenFlowRuleProvider.java:417)[180:org.onosproject.onos-providers-openflow-flow:1.12.1.SNAPSHOT]
  at org.onosproject.openflow.controller.impl.OpenFlowControllerImpl$OpenFlowSwitchAgent.removeConnectedSwitch(OpenFlowControllerImpl.java:783)[177:org.onosproject.onos-protocols-openflow-ctl:1.12.1.SNAPSHOT]
  at org.onosproject.openflow.controller.driver.AbstractOpenFlowSwitch.removeConnectedSwitch(AbstractOpenFlowSwitch.java:344)[164:org.onosproject.onos-protocols-openflow-api:1.12.1.SNAPSHOT]
  at org.onosproject.openflow.controller.impl.OFChannelHandler.channelInactive(OFChannelHandler.java:1288)[177:org.onosproject.onos-protocols-openflow-ctl:1.12.1.SNAPSHOT]

Change-Id: Iae3150f9eb3767c4b579d6b287dededb2da76997