Function create_function() is deprecated – PHP 7.2.0

I’m getting this PHP warning message on my logs:
PHP Deprecated: Function create_function() is deprecated in /var/www/[snip]/wp-content/plugins/nextcellent-gallery-nextgen-legacy/widgets/class-ngg-slideshow-widget.php on line 175

It relates to the last lines in the three widget files
/widgets/class-ngg-gallery-widget.php
/widgets/class-ngg-media-rss-widget.php
/widgets/class-ngg-slideshow-widget.php

An example line :

add_action('widgets_init',
	create_function('', 'return register_widget("NGG_Media_RSS_Widget");')
);

The PHP manual says :

Warning
This function has been DEPRECATED as of PHP 7.2.0. Relying on this function is highly discouraged.

(My host said they were going to upgrade to 7.2).

I don’t actually use these widgets, but I also don’t like clogging my logs, so here’s a workaround example (for the class-ngg-media-rss-widget.php file)…
Comment out the ‘add_action’ line (above)
Append the following lines :

/**
 * Register NGG Media RSS widget
 *
 * 
 */
function ngg_register_media_rss_widget() {
    register_widget( 'NGG_Media_RSS_Widget' );
}

add_action( 'widgets_init', 'ngg_register_media_rss_widget' );

The widget still appears on my ‘Appearance/Widgets’ file
Similar treatments to the other two files (using unique function names, of course) should resolve the issue.

If anyone has a better solution, please feel free to chime in ??