Don't call is_wp_error() in wp_die() if it hasn't been defined yet. fixes #4308
git-svn-id: http://svn.automattic.com/wordpress/trunk@5507 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -1337,7 +1337,7 @@ function wp_nonce_ays($action) {
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function wp_die( $message, $title = '' ) {
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global $wp_locale;
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if ( is_wp_error( $message ) ) {
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if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
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if ( empty($title) ) {
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$error_data = $message->get_error_data();
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if ( is_array($error_data) && isset($error_data['title']) )
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