Test using an intermediate.

Author: Capstan

src/test/java/com/github/fge/jackson/JsonNodeReaderTest.java

@@ -51,7 +51,8 @@ public void streamIsClosedOnRead()
         throws IOException
     {
         final Supplier<InputStream> supplier = provideInputStream("[]");
-        final InputStream in = spy(supplier.get());
+        InputStream inOriginal = supplier.get();
+        final InputStream in = spy(inOriginal);
         final JsonNode node = new JsonNodeReader().fromInputStream(in);
         verify(in).close();
         assertEquals(node, new ObjectMapper().readTree(supplier.get()));