fix: remove redundant variables

Signed-off-by: “Kevin” <kevlar_ksb@yahoo.com>

Author: Bueller87

src/main/java/com/uber/cadence/samples/query/OrderFulfillmentWorkflow.java

@@ -107,8 +107,8 @@ public static final class WorkflowImpl implements WorkflowIface {
      */
     private final ArrayDeque<Object> inbox = new ArrayDeque<>();
 
-    private final String cachedWorkflowId = "";
-    private final String cachedRunId = "";
+    private final String cachedWorkflowId;
+    private final String cachedRunId;
 
     /** Inbox wrapper so {@code mark_ready_to_ship} vs {@code mark_delivered} are not ambiguous. */
     private static final class ReadyToShipMessage {