Make sure that we don't set the done ratio to a value > 100% (#15870).

git-svn-id: http://svn.redmine.org/redmine/trunk@12669 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -1364,6 +1364,7 @@ class Issue < ActiveRecord::Base
                 "* (CASE WHEN is_closed = #{connection.quoted_true} THEN 100 ELSE COALESCE(done_ratio, 0) END)").to_f
           progress = done / (average * leaves_count)
           p.done_ratio = progress.round
+          p.done_ratio = 100 if p.done_ratio > 100
         end
       end