Iterator always deals Strings (FindBugs).

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1165984 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/test/java/org/apache/commons/io/LineIteratorTestCase.java

@@ -291,7 +291,7 @@ public void testCloseEarly() throws Exception {
         LineIterator iterator = FileUtils.lineIterator(testFile, encoding);
         try {
             // get
-            assertTrue("Line expected", iterator.next() instanceof String);
+            assertNotNull("Line expected", iterator.next());
             assertTrue("More expected", iterator.hasNext());
 
             // close