Fix cts-v1 build breakage.

We're still using javac for CollectAllTests and javac complains
about referencing a variable that isn't effectively final from a
lambda expression. Jack erroneously doesn't complain (b/27605155).

bug: 27426688
Change-Id: I96581185c124c237f84910e633b652544d48a6c0
diff --git a/harmony-tests/src/test/java/org/apache/harmony/tests/java/util/ArrayListTest.java b/harmony-tests/src/test/java/org/apache/harmony/tests/java/util/ArrayListTest.java
index 446f61c..0e9b161 100644
--- a/harmony-tests/src/test/java/org/apache/harmony/tests/java/util/ArrayListTest.java
+++ b/harmony-tests/src/test/java/org/apache/harmony/tests/java/util/ArrayListTest.java
@@ -1130,10 +1130,10 @@
         } catch (ConcurrentModificationException expected) {
         }
 
-        list = new ArrayList<>();
-        list.add(52);
+        ArrayList<Integer> list2 = new ArrayList<>();
+        list2.add(52);
         try {
-            sp.forEachRemaining(value -> list.add(value));
+            sp.forEachRemaining(value -> list2.add(value));
             fail();
         } catch (ConcurrentModificationException expected) {
         }