[TYPO3-core] Bugfix class.db_list_extra.inc

[Wolfgang Klinger]

 *hiya!*

 On Thu, 09 Feb 2006, Wolfgang Klinger wrote the following:
>  There's a missing 'is_array' check in this class
>  that leads possibly to some warning messages.
> 
>  I think that's something that does not require a review, right?

 Committed.

 I've not added an entry in the ChangeLog file though
 (too trivial IMHO)...


 bye
 Wolfgang