address review comment

Author: kiszk

common/unsafe/src/main/java/org/apache/spark/unsafe/array/ByteArrayMethods.java

@@ -64,7 +64,7 @@ public static boolean arrayEqualsBlock(
    * @return true if the arrays are equal, false otherwise
    */
   public static boolean arrayEquals(
-      Object leftBase, long leftOffset, Object rightBase, long rightOffset, final long length) {
+      Object leftBase, long leftOffset, Object rightBase, long rightOffset, long length) {
     int i = 0;
 
     // check if starts align and we can get both offsets to be aligned