Re-enabling a disabled datasource results in an ERROR report in the log in EAP 6.4.0

Issue

• The following exception is logged when disabling and then re-enabling a datasource in the web based admin console:

... ERROR [org.jboss.msc.service] ... MSC000002: Invocation of listener "org.jboss.as.connector.subsystems.datasources.DataSourceStatisticsListener@133321d6" failed: java.lang.IllegalArgumentException: JBAS014809: A node is already registered at '(subsystem => datasources)(data-source => ExampleDS)'
    at org.jboss.as.controller.registry.ConcreteResourceRegistration.registerSubModel(ConcreteResourceRegistration.java:153)
    at org.jboss.as.controller.registry.AbstractResourceRegistration.registerOverrideModel(AbstractResourceRegistration.java:128)
    at org.jboss.as.controller.registry.DelegatingManagementResourceRegistration.registerOverrideModel(DelegatingManagementResourceRegistration.java:180)
    at org.jboss.as.connector.subsystems.datasources.DataSourceStatisticsListener.transition(DataSourceStatisticsListener.java:74)
    at org.jboss.msc.service.ServiceControllerImpl.invokeListener(ServiceControllerImpl.java:1565)
    at org.jboss.msc.service.ServiceControllerImpl.access$2800(ServiceControllerImpl.java:52)
    at org.jboss.msc.service.ServiceControllerImpl$ListenerTask.run(ServiceControllerImpl.java:2131)
    ...