PDFBOX-5660: close input, as suggested by Valery Bokov; closes #404

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1931509 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

io/src/test/java/org/apache/pdfbox/io/RandomAccessReadBufferTest.java

@@ -230,7 +230,8 @@ void testPDFBOX5158() throws IOException
             os.write(new byte[4096]);
         }
         assertEquals(4096, path.toFile().length());
-        try (RandomAccessRead rar = new RandomAccessReadBuffer(Files.newInputStream(path)))
+        try (InputStream is = Files.newInputStream(path);
+             RandomAccessRead rar = new RandomAccessReadBuffer(is))
         {
             assertEquals(0, rar.read());
         }