Need a conditional for $posts in wpp_fix_post_date function

Hello friends,

Need to be a conditional for $post in wpp_fix_post_date function. always are not in the loop.

function wpp_fix_post_date( $time, $format = '' ) {
    global $post, $wpp_settings;

    // It's seems some plugin like acf does not exits $post.
    if( empty($post) )
        return $time;

    if ( empty( $format ) )
        $format = get_option( 'date_format' );

    if ( $wpp_settings['conv_dates'] == 'disable' )
        return parsidate( $format, $post->post_date, 'eng' );
    else
        return parsidate( $format, $post->post_date );
}

Regards