[TYPO3-core] FYI: Fixed bug #10531: htmlArea RTE: JS error may be raised by Opera on page unload

[Stanislas Rolland]

FYI: The attached SVN patch was committed.

Type:
Bugfix

Problem:
When there are multiple RTE's on a page, Opera may raise a JS error on 
page unload.

Solution:
Check if status bar components are still available to cleanup.

Bugtracker references:
http://bugs.typo3.org/view.php?id=10531

Branches:
trunk (revision 5060)

Regards,
Stanislas
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