Austria causes crash

[SimZal]

New browsers support array function at().
This causes error when "at" is present as country code, but not present on map:
jquery.vmap.min.js:10 Uncaught TypeError: this.countries[d].setFill is not a function
or
jquery.vmap.min.js:10 Uncaught TypeError: this.countries[code].setFill is not a function

To fix, in unminified version replace
if (this.countries[code]) {
with
if (this.countries.hasOwnProperty(code)) {