SPR-6419, manager implementation

Author: Micha Kiener

org.springframework.context/src/main/java/org/springframework/conversation/manager/ConversationManagerImpl.java

@@ -285,7 +285,9 @@ public <T extends ConversationType> Conversation beginConversation(JoinMode join
 	 * @return the newly created conversation object
 	 */
 	protected MutableConversation createNewConversation() {
-		return new ConversationImpl();
+		ConversationImpl conversation = new ConversationImpl();
+		conversation.setManager(this);
+		return conversation;
 	}
 
 	/**