Undefined errors in version 2.2

```
What steps will reproduce the problem?

1. Load any XLS using the default scripts.

What is the expected output? What do you see instead?

The XLS displays OK but errors are recorded in the logs:

- PHP Notice: Undefined index: dontprint in excel_reader2.php on line 626
- PHP Notice: Undefined index: hyperlink in inc_excel_reader2.php on line 383

Please provide any additional information below.

Running CentOS 6.6 with PHP 5.4

```

Original issue reported on code.google.com by `ArtistSc...@gmail.com` on 5 Jan 2015 at 9:35

Reproduce the issue by loading an XLS with the default scripts, then inspect excel_reader2.php around line 626 and inc_excel_reader.php around line 383. Confirm the source of the undefined-index notices and verify that loading the XLS completes without those log errors while the displayed content remains correct.

Written by the indexing model from the issue text.