JIRA: https://jira.springsource.org/browse/INT-3313 Previously, when `requires-reply="false"` on a `<jms:outbound-gateway/>` a `null` reply caused a `MessageTimeoutException`, instead of quiet ending of flow. Conflicts: spring-integration-jms/src/test/java/org/springframework/integration/jms/JmsOutboundInsideChainTests.java Resolved.