test/hotspot/jtreg/gc/g1/humongousObjects/TestHumongousClassLoader.java

8217385: JTREG: Clean up, make sure to close resources

         Path wrkDir = Paths.get("");
         URL[] url = {wrkDir.toUri().toURL()};
         URLClassLoader urlLoader = new URLClassLoader(url);
 
         Class<?> simpleClassLoaderClass = urlLoader.loadClass(SIMPLE_CLASSLOADER_NAME);
+        urlLoader.close();
 
         ClassLoader simpleClassLoader = (ClassLoader) simpleClassLoaderClass
                 .getConstructor(java.lang.ClassLoader.class)
                 .newInstance(TestHumongousClassLoader.class.getClassLoader());