Error en la muestra de entradillas tras actualización a 4.3

<?php class ETRecentFromWidget extends WP_Widget
{
function ETRecentFromWidget(){
$widget_ops = array('description' => 'Displays recent posts from any category');
$control_ops = array('width' => 400, 'height' => 300);
parent::WP_Widget(false,$name='ET Recent From Widget',$widget_ops,$control_ops);
}

/* Displays the Widget in the front-end */
function widget($args, $instance){
extract($args);
$title = apply_filters('widget_title', empty($instance['title']) ? 'Recent From ' : $instance['title']);
$posts_number = empty($instance['posts_number']) ? '' : (int) $instance['posts_number'];
$blog_category = empty($instance['blog_category']) ? '' : (int) $instance['blog_category'];

echo $before_widget;

if ( $title )
echo $before_title . $title . $after_title;
?>
<?php query_posts("posts_per_page=".$posts_number."&cat=".$blog_category);
if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="b-post clearfix">
<?php
$thumb = '';
$width = 80;
$height = 80;
$classtext = 'post-image';
$titletext = get_the_title();
$thumbnail = get_thumbnail($width,$height,$classtext,$titletext,$titletext,false,'Recent');
$thumb = $thumbnail["thumb"];
?>

<?php if($thumb <> '' && get_option('aggregate_thumbnails_index') == 'on') { ?>
<div class="thumb">
<a href="<?php the_permalink(); ?>">
<?php print_thumbnail($thumb, $thumbnail["use_timthumb"], $titletext, $width, $height, $classtext); ?>
<span class="overlay"></span>
</a>
</div> <!-- end .post-thumbnail -->
<?php } ?>

<h3 class="title"><a href="<?php the_permalink(); ?>"><?php echo truncate_title(65); ?></a></h3>
<?php the_excerpt(); ?>
<p class="meta-info"><?php esc_html_e('Posted','Aggregate'); ?> <?php esc_html_e('by','Aggregate');?> <?php the_author_posts_link(); ?> <?php esc_html_e('on','Aggregate'); ?> <?php the_time('n-j-y'); ?></p>
</div> <!-- end .b-post -->
<?php endwhile; endif; wp_reset_query(); ?>

<a href="<?php echo esc_url( get_category_link($blog_category) ); ?>" class="more"><span><?php esc_html_e('More From ','Aggregate'); ?><?php echo get_categname($blog_category); ?></span></a>
<?php
echo $after_widget;
}

/*Saves the settings. */
function update($new_instance, $old_instance){
$instance = $old_instance;
$instance['title'] = sanitize_text_field($new_instance['title']);
$instance['posts_number'] = (int) $new_instance['posts_number'];
$instance['blog_category'] = (int) $new_instance['blog_category'];

return $instance;
}

/*Creates the form for the widget in the back-end. */
function form($instance){
//Defaults
$instance = wp_parse_args( (array) $instance, array('title'=>'Recent From ', 'posts_number'=>'7', 'blog_category'=>'') );

$title = esc_attr($instance['title']);
$posts_number = (int) $instance['posts_number'];
$blog_category = (int) $instance['blog_category'];

# Title
echo '<p><label for="' . $this->get_field_id('title') . '">' . 'Title:' . '</label><input class="widefat" id="' . $this->get_field_id('title') . '" name="' . $this->get_field_name('title') . '" type="text" value="' . $title . '" /></p>';
# Number Of Posts
echo '<p><label for="' . $this->get_field_id('posts_number') . '">' . 'Number of Posts:' . '</label><input class="widefat" id="' . $this->get_field_id('posts_number') . '" name="' . $this->get_field_name('posts_number') . '" type="text" value="' . $posts_number . '" /></p>';
# Category ?>
<?php
$cats_array = get_categories('hide_empty=0');
?>
<p>
<label for="<?php echo $this->get_field_id('blog_category'); ?>">Category</label>
<select name="<?php echo $this->get_field_name('blog_category'); ?>" id="<?php echo $this->get_field_id('blog_category'); ?>" class="widefat">
<?php foreach( $cats_array as $category ) { ?>
<option value="<?php echo esc_attr( $category->cat_ID ); ?>"<?php selected( $instance['blog_category'], $category->cat_ID ); ?>><?php echo $category->cat_name; ?></option>
<?php } ?>
</select>
</p>
<?php
}

}// end ETRecentFromWidget class

function ETRecentFromWidgetInit() {
register_widget('ETRecentFromWidget');
}

add_action('widgets_init', 'ETRecentFromWidgetInit');

?>

<?php


/** 
Limitar excrept
*/

function get_excerpt($count){
$permalink = get_permalink($post->ID);
$excerpt = get_the_content();
$excerpt = strip_tags($excerpt);
$excerpt = substr($excerpt, 0, $count);
$excerpt = substr($excerpt, 0, strripos($excerpt, " "));
$excerpt = $excerpt.'... <a href="'.$permalink.'">Sigue</a>';
return $excerpt;
}



function custom_excerpt_length( $length ) {
return 100;
}
add_filter( 'excerpt_length', 'custom_excerpt_length', 999 );



?>