Rails3: scm: bazaar: fix error of test_previous_nil at unit model test

On Rails 3.1, ActiveRecord::HasManyThroughCantAssociateThroughHasOneOrManyReflection error raises.
For more details, see r7062.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7081 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/repository_bazaar_test.rb

@@ -87,8 +87,10 @@ class RepositoryBazaarTest < ActiveSupport::TestCase
     end
 
     def test_previous_nil
+      assert_equal 0, @repository.changesets.count
       @repository.fetch_changesets
-      @repository.reload
+      @project.reload
+      assert_equal NUM_REV, @repository.changesets.count
       changeset = @repository.find_changeset_by_name('1')
       assert_nil changeset.previous
     end