Cross site state transfer - CLI ops throw NPE when backup is not defined

When <backups><backup site="XYZ"/></backups> is not present in configuration of given cache, "site" CLI operations are still available on the node. However, their usage leads to NPEs being thrown, e.g.

[31m22:40:13,381 ERROR [org.infinispan.cli.interpreter.Interpreter] (management-handler-thread - 4) ISPN019003: Interpreter error: java.lang.NullPointerException
at org.infinispan.cli.interpreter.statement.SiteStatement.execute(SiteStatement.java:46) [infinispan-cli-interpreter-7.0.0.Final.jar:7.0.0.Final]
at org.infinispan.cli.interpreter.Interpreter.execute(Interpreter.java:149) [infinispan-cli-interpreter-7.0.0.Final.jar:7.0.0.Final]
at org.infinispan.server.infinispan.SecurityActions$6.run(SecurityActions.java:255) [infinispan-server-infinispan-7.0.0.Final.jar:7.0.0.Final]
at org.infinispan.server.infinispan.SecurityActions$6.run(SecurityActions.java:252) [infinispan-server-infinispan-7.0.0.Final.jar:7.0.0.Final]
at org.infinispan.security.Security.doPrivileged(Security.java:89) [infinispan-core-7.0.0.Final.jar:7.0.0.Final]
at org.infinispan.server.infinispan.SecurityActions.doPrivileged(SecurityActions.java:68) [infinispan-server-infinispan-7.0.0.Final.jar:7.0.0.Final]
at org.infinispan.server.infinispan.SecurityActions.executeInterpreter(SecurityActions.java:258) [infinispan-server-infinispan-7.0.0.Final.jar:7.0.0.Final]
at org.jboss.as.clustering.infinispan.subsystem.CliInterpreterHandler.execute(CliInterpreterHandler.java:49) [infinispan-server-infinispan-7.0.0.Final.jar:7.0.0.Final]
at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:606) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:484) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:281) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:276) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:271) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:145) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:199) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.access$300(ModelControllerClientOperationHandler.java:130) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:150) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:146) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.7.0_60]
at javax.security.auth.Subject.doAs(Subject.java:415) [rt.jar:1.7.0_60]
at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:94) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:146) [wildfly-controller-8.1.0.Final.jar:8.1.0.Final]
at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:283)
at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:504)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_60]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_60]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_60]
at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final.jar:2.1.1.Final]