SocialSharePrivacy load only once

gistfile1.js

jQuery( document ).ready( function( $ ) {
    var loadSsp = function() {
        if( $( '.socialshareprivacy' ).length > 0 ){
            $( '.socialshareprivacy' ).socialSharePrivacy();
        }
    }

    if( !$.socialSharePrivacy ) {
        $.getScript( 'http://www.totaltankstelle.de/static/socialshareprivacy/socialshareprivacy.js', function() {
            loadSsp();
        } );
    } else {
        loadSsp();
    }
});