Test can hang if the async event isn't received, add a timeout in the test loop's wait call to prevent this.

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1311402 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/test/java/org/apache/activemq/OnePrefetchAsyncConsumerTest.java

@@ -70,7 +70,7 @@ public class OnePrefetchAsyncConsumerTest extends EmbeddedBrokerTestSupport {
         long done = System.currentTimeMillis() + getMaxTestTime();
         synchronized (testMutex) {
            while (!testMutex.testCompleted && System.currentTimeMillis() < done) {
-              testMutex.wait();
+              testMutex.wait(TimeUnit.SECONDS.toMillis(5));
            }
         }