Add notNull assertion in JobParameter to ensure type is not null

Resolves #4263

Author: drow724

spring-batch-core/src/main/java/org/springframework/batch/core/JobParameter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,6 +30,7 @@
  * @author Dave Syer
  * @author Michael Minella
  * @author Mahmoud Ben Hassine
+ * @author Song JaeGeun
  * @since 2.0
  *
  */
@@ -49,7 +50,7 @@ public class JobParameter<T> implements Serializable {
 	 */
 	public JobParameter(@NonNull T value, @NonNull Class<T> type, boolean identifying) {
 		Assert.notNull(value, "value must not be null");
-		Assert.notNull(value, "type must not be null");
+		Assert.notNull(type, "type must not be null");
 		this.value = value;
 		this.type = type;
 		this.identifying = identifying;