Fixed country code detection

Closes #914

app/js/controllers.js

@@ -101,6 +101,7 @@ angular.module('myApp.controllers', ['myApp.i18n'])
     }
 
     function selectPhoneCountryByIso2 (countryIso2) {
+      if (countryIso2) {
         var i, country;
         for (i = 0; i < Config.CountryCodes.length; i++) {
           country = Config.CountryCodes[i];
@@ -108,6 +109,7 @@ angular.module('myApp.controllers', ['myApp.i18n'])
             return selectCountry({name: _(country[1] + '_raw'), code: country[2]});
           }
         }
+      }
       return selectCountry({name: _('country_select_modal_country_us_raw'), code: '+1'});
     }