Fix ambiguous phrasing in tests comments regarding $opt$.

Change-Id: I78e6bccbe35288df5de30700d3877bbcdef37d65
diff --git a/test/412-new-array/src/Main.java b/test/412-new-array/src/Main.java
index e4669b8..b9c2a05 100644
--- a/test/412-new-array/src/Main.java
+++ b/test/412-new-array/src/Main.java
@@ -17,7 +17,7 @@
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
-// Note that $opt$ is a marker for the optimizing compiler to ensure
+// Note that $opt$ is a marker for the optimizing compiler to test
 // it does compile the method.
 
 public class Main extends TestCase {