Initialize in the Theme_Upgrader class. props mitchoyoshitaka, fixes #18367.
git-svn-id: https://develop.svn.wordpress.org/trunk@18525 602fd350-edb4-49c9-b593-d223f7449a82
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@ -604,6 +604,7 @@ class Plugin_Upgrader extends WP_Upgrader {
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class Theme_Upgrader extends WP_Upgrader {
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var $result;
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var $bulk = false;
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function upgrade_strings() {
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$this->strings['up_to_date'] = __('The theme is at the latest version.');
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