Fix a strange new failure in 1.9.2/3.2

test/generator_test.rb

@@ -72,8 +72,12 @@ class GeneratorTest < Rails::Generators::TestCase
 
     context 'without required arguments' do
       should 'not create the migration' do
+        begin
           silence_stream(STDERR) { run_generator %w() }
           assert_no_migration 'db/migrate/add_attachment_avatar_to_users.rb'
+        rescue Thor::RequiredArgumentMissingError
+          # This is also OK. It happens in 1.9.2 and Rails 3.2
+        end
       end
     end
   end