Rails3: scm: git: fix error of test_db_consistent_ordering_before_1_2 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@7084 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/repository_git_test.rb

@@ -207,7 +207,7 @@ class RepositoryGitTest < ActiveSupport::TestCase
       @repository.changesets.each do |rev|
         rev.destroy if del_revs.detect {|r| r == rev.scmid.to_s }
       end
-      @repository.reload
+      @project.reload
       cs1 = @repository.changesets
       assert_equal 15, cs1.count
       assert_equal 0, @repository.extra_info["db_consistent"]["ordering"]