Fix tests for pub global activate.

sdk/lib/_internal/pub/test/get/hosted/get_test.dart

Index: sdk/lib/_internal/pub/test/get/hosted/get_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/hosted/get_test.dart b/sdk/lib/_internal/pub/test/get/hosted/get_test.dart
index 2779da1a1740a66dc02650b172a148e604b5dee0..fa2ffe43ad76b1f922d46c300fc1a6270bd0ce7d 100644
--- a/sdk/lib/_internal/pub/test/get/hosted/get_test.dart
+++ b/sdk/lib/_internal/pub/test/get/hosted/get_test.dart
@@ -4,6 +4,7 @@
 
 library pub_tests;
 
+import '../../../lib/src/exit_codes.dart' as exit_codes;
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
@@ -25,7 +26,9 @@ main() {
 
     d.appDir({"bad name!": "1.2.3"}).create();
 
-    pubGet(error: new RegExp(
-        r"Could not find package bad name! at http://localhost:\d+\."));
+    pubGet(
+        error: new RegExp(
+          r"Could not find package bad name! at http://localhost:\d+\."),
+        exitCode: exit_codes.UNAVAILABLE);
   });
 }