Fix tests to accept short locale names as long as long ones, properly this time.

pkg/intl/test/find_default_locale_browser_test.dart

Index: pkg/intl/test/find_default_locale_browser_test.dart
diff --git a/pkg/intl/test/find_default_locale_browser_test.dart b/pkg/intl/test/find_default_locale_browser_test.dart
index e4d78fd0ae7f236ac8d6f292c426752eb16f5cc5..1cc177eb53de63f54b399d92a4c65aaf20c8073f 100644
--- a/pkg/intl/test/find_default_locale_browser_test.dart
+++ b/pkg/intl/test/find_default_locale_browser_test.dart
@@ -24,7 +24,7 @@ verifyLocale(_) {
   // Allow either en_US or just en type locales. Windows in particular may
   // give us just ru for ru_RU
   var pattern = new RegExp(r"\w\w_[A-Z0-9]+");
-  var shortPattern = new RegExp(r"\w\w\");
+  var shortPattern = new RegExp(r"\w\w");
   var match = pattern.hasMatch(Intl.systemLocale);
   var shortMatch = shortPattern.hasMatch(Intl.systemLocale);
   expect(match || shortMatch, isTrue);