test/hotspot/jtreg/gc/metaspace/TestMetaspaceInitialization.java

8217389: JTREG: Clean up, remove unused variable warnings

  * @modules java.base/jdk.internal.misc
  * @run main/othervm -XX:MetaspaceSize=0 gc.metaspace.TestMetaspaceInitialization
  */
 public class TestMetaspaceInitialization {
     private class Internal {
+        @SuppressWarnings("unused")
         public int x;
         public Internal(int x) {
             this.x = x;
         }
     }