Check if categories is an array.
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@ -55,7 +55,10 @@ class OC_VCategories {
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$this->app = $app;
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$this->user = is_null($user) ? OC_User::getUser() : $user;
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$categories = trim(OC_Preferences::getValue($this->user, $app, self::PREF_CATEGORIES_LABEL, ''));
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$this->categories = $categories != '' ? @unserialize($categories) : $defcategories;
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if ($categories) {
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$categories = @unserialize($categories);
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}
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$this->categories = is_array($categories) ? $categories : $defcategories;
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}
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/**
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