Odd TRIM warning when editing page

[ashantycapre]

HI!!
If this will be the code:

PHP Code:
if ((trim($page['userperms']) AND in_array($usergroup['usergroupid'], $page['userperms']))
OR $_REQUEST['do'] == 'addpage'
)
And replace with this:
PHP Code:
if (in_array($usergroup['usergroupid'], $page['userperms']) OR $_REQUEST['do'] == 'addpage')
What was the main idea and how can we fix and find solution on this?any contribution?
Thank you!!
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