Bug with white screen when posting a comment.

When logged out and trying to post comment – it shows white screen on wp-comment page. Using WP 4.3. To fix it you need to return content of ZakiLikeDislike_AddPluginHml (main file, 189 and 191 strings). It helps to fix this bug, as i can see.

function ZakiLikeDislike_AddPluginHml($content) {
    $settings = get_option('zaki_like_dislike_options');
    if($settings['show']) :
        return ZakiLikeDislike::getLikeDislikeHtml();
    endif;
	return apply_filters( 'the_content', $content );
}
add_action('comment_text','ZakiLikeDislike_AddPluginHml');

https://wordpress.org/plugins/zaki-like-dislike-comments/