NPE in RemoteStore when not properly initialized

      java.lang.NullPointerException
	at org.infinispan.persistence.remote.RemoteStore.clear(RemoteStore.java:380)
	at org.infinispan.commons.test.BlockHoundHelper.ensureNonBlocking(BlockHoundHelper.java:47)
	at org.infinispan.persistence.support.EnsureNonBlockingStore.clear(EnsureNonBlockingStore.java:71)
	at org.infinispan.persistence.support.WaitNonBlockingStore.clearAndWait(WaitNonBlockingStore.java:59)
	at org.infinispan.persistence.BaseNonBlockingStoreTest.tearDown(BaseNonBlockingStoreTest.java:150)
	at org.infinispan.persistence.remote.RemoteStoreTest.tearDown(RemoteStoreTest.java:152)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
... Removed 18 stack frames