af_readability: encoding may be lower case
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@ -123,7 +123,7 @@ class Af_Readability extends Plugin {
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if (!$tmpdoc->loadHTML($tmp))
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return $article;
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if ($tmpdoc->encoding != 'UTF-8') {
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if (strtolower($tmpdoc->encoding) != 'utf-8') {
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$tmpxpath = new DOMXPath($tmpdoc);
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foreach ($tmpxpath->query("//meta") as $elem) {
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