Return null instead of throwing exception for unrecognized class.

I think returning null is probably better than throwing an exception,
since it might be not so exceptional case, when destinationType of MessageDrivenBean is not recognized.

rules-java-ee/addon/src/main/java/org/jboss/windup/rules/apps/javaee/service/JmsDestinationService.java

@@ -69,7 +69,8 @@ public JmsDestinationModel createUnique(Set<ProjectModel> applications, String j
 
     /**
      * Gets JmsDestinationType from java class name
-     * @throws RuntimeException When class is not recognized
+     *
+     * Returns null for unrecognized class
      */
     public static JmsDestinationType getTypeFromClass(String aClass)
     {
@@ -83,7 +84,7 @@ else if (StringUtils.equals(aClass, "javax.jms.Topic")  || StringUtils.equals(aC
         }
         else
         {
-            throw new RuntimeException("Unrecognized class");
+            return null;
         }
     }
 }