#150 urlencode() warning in file backend

[Erwann Penet]

function _pagename2filename in backend/file.php seems to be taking sometimes a string as $pagename, sometimes an array.
I have added this line at the beginning of the function to get rid of the annoying Warnings:
if (is_array($pagename) && isset($pagename['linkto'])) $pagename=$pagename['linkto'];

[Reini Urban]

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Interesting, thanks! I try to find the real culprit. It didn't appear in the unittests.