[Plugin: NextGen Gallery 1.5.5] [BUG] deprecated is_site_admin function

NextGen Gallery v1.5.5 contains three instances of the deprecated function is_site_admin(), which are reported when using WP_DEBUG = true in wp-config.php

is_site_admin was deprecated in WP 3.0 and replaced with is_super_admin

nextgen-gallery/admin/admin.php
change is_site_admin to is_super_admin (2 instances)

function wpmu_site_admin() {
	// Check for site admin
	if ( function_exists('is_site_admin') )
		if ( is_site_admin() )
			return true;

	return false;
}

nextgen-gallery/admin/wpmu.php
change is_site_admin to is_super_admin (1 instance)

//to be sure
	if (!is_site_admin())

It’s possible but not sure these are also responsible for a “headers already sent error” occurring at the same time after uploadng an image and using its URL as the image location for a sidebar widget blogroll image …. still testing that one.