--- old/src/java.base/share/classes/sun/net/www/content/text/plain.java	2019-07-17 17:01:14.000000000 -0700
+++ new/src/java.base/share/classes/sun/net/www/content/text/plain.java	2019-07-17 17:01:14.000000000 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1994, 1996, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1994, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,7 +40,10 @@
     public Object getContent(URLConnection uc) {
         try {
             InputStream is = uc.getInputStream();
-            return new PlainTextInputStream(uc.getInputStream());
+            if (is == null) {
+                is = InputStream.nullInputStream();
+            }
+            return new PlainTextInputStream(is);
         } catch (IOException e) {
             return "Error reading document:\n" + e.toString();
         }