Fix 080-oom-throw println failing.

System.println would occasionally fail since it does small allocations. This is
fixed by releasing the memory used by the test before calling println.

Change-Id: Ibb40f14f08d5844145b1da65750ecb50a7330dcd
diff --git a/test/080-oom-throw/src/Main.java b/test/080-oom-throw/src/Main.java
index 3d75f3d..052feb6 100644
--- a/test/080-oom-throw/src/Main.java
+++ b/test/080-oom-throw/src/Main.java
@@ -56,6 +56,8 @@
 
         int count = ArrayMemEater.blowup(holder, size);
         ArrayMemEater.confuseCompilerOptimization(holder);
+        // Ensure there is some reclaimable memory for println.
+        holder = null;
         if (count < size) {
             System.out.println("Array allocation failed");
         }
@@ -69,6 +71,8 @@
             lastMemEater = lastMemEater.next;
         } while (lastMemEater != null);
         memEater.confuseCompilerOptimization(memEater);
+        // Ensure there is some reclaimable memory for println.
+        memEater = null;
         System.out.println("Instance allocation failed");
     }