unreachable code after return statement

I am getting this following warning/error in my console and tracked it down to your plugin (and a few other ones).

unreachable code after return statement
(/js/chosen/chosen.jquery.js – …/chosen.jquery.min.js – …/chosen.proto.js)

and is refering to

AbstractChosen.browser_is_supported = function() {
      if (window.navigator.appName === "Microsoft Internet Explorer") {
        return document.documentMode >= 8;
      }
      if (/iP(od|hone)/i.test(window.navigator.userAgent)) {
        return false;
      }
      if (/Android/i.test(window.navigator.userAgent)) {
        if (/Mobile/i.test(window.navigator.userAgent)) {
          return false;
        }
      }
      return true;
    };

starting on line 489

It’s not doing any harm, but still a warning in the console. May be fixed in future versions or replaced (as it seems to be a vendor/external js)