Prevent auto-execution of scripts when no explicit dataType was provided.

/**
 * Prevent auto-execution of scripts when no explicit dataType
 * was provided (See gh-2432).
 *
 * Usage:
 *
 * To apply the fix, apply the patch manually in your application code
 * just after loading jQuery.
 *
 * Source:
 *     https://github.com/jquery/jquery/issues/2432#issuecomment-403761229
 *
 * Cross-site Scripting (XSS) Vulnerability Affecting jquery package, versions <3.0.0-beta1 >1.12.3 || <1.12.0 >=1.4.0:
 *     https://snyk.io/vuln/npm:jquery:20150627
 */
jQuery.ajaxPrefilter(function(s) {
    if (s.crossDomain) {
        s.contents.script = false;
    }
});