Use try-with-resources

Author: garydgregory

src/test/java/org/apache/commons/collections4/map/MultiValueMapTest.java

@@ -100,11 +100,9 @@ public Object makeObject() {
 
     private byte[] serialize(final Object object) throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        final ObjectOutputStream oos = new ObjectOutputStream(baos);
-
-        oos.writeObject(object);
-        oos.close();
-
+        try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
+            oos.writeObject(object);
+        }
         return baos.toByteArray();
     }