Inaccurate IJ000100 leak warnings in certain cases when using Cached Connection Manager debug in JBoss EAP 7.1

Issue

• The database has been shutdown and connection validation fails while getting a connection
• Cached connection manager debug has been enabled to check for leaks

• The connection is reported as having been leaked though it was never returned to the component requesting it

  ... IJ000100: Closing a connection for you. Please close them yourself: org.jboss.jca.adapters.jdbc.jdk8.WrappedConnectionJDK8@55f66f3c: java.lang.Throwable: STACKTRACE
      at org.jboss.jca.core.connectionmanager.ccm.CachedConnectionManagerImpl.registerConnection(CachedConnectionManagerImpl.java:308)
      at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:819)
      at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
      at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:64)
      at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
      ...