Fixed: ActiveRecord::StaleObjectError exception on closing a set of circular duplicate issues (#1105).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1360 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -153,6 +153,8 @@ class Issue < ActiveRecord::Base
     # Close duplicates if the issue was closed
     if @issue_before_change && !@issue_before_change.closed? && self.closed?
       duplicates.each do |duplicate|
+        # Reload is need in case the duplicate was updated by a previous duplicate
+        duplicate.reload
         # Don't re-close it if it's already closed
         next if duplicate.closed?
         # Same user and notes

test/unit/issue_test.rb

@@ -48,6 +48,8 @@ class IssueTest < Test::Unit::TestCase
     IssueRelation.create(:issue_from => issue1, :issue_to => issue2, :relation_type => IssueRelation::TYPE_DUPLICATES)
     # And 3 is a dupe of 2
     IssueRelation.create(:issue_from => issue2, :issue_to => issue3, :relation_type => IssueRelation::TYPE_DUPLICATES)
+    # And 3 is a dupe of 1 (circular duplicates)
+    IssueRelation.create(:issue_from => issue1, :issue_to => issue3, :relation_type => IssueRelation::TYPE_DUPLICATES)
     
     assert issue1.reload.duplicates.include?(issue2)