Fixed calculation of costs after removal of denormalized values

git-svn-id: https://dev.finn.de/svn/cockpit/trunk@392 7926756e-e54e-46e6-9721-ed318f58905e

lib/issue_patch.rb

@@ -49,7 +49,7 @@ module IssuePatch
         WHEN #{CostEntry.table_name}.overridden_costs IS NULL THEN
           #{CostEntry.table_name}.costs
         ELSE
-          #{CostEntry.table_name}.overridden_costs END")
+          #{CostEntry.table_name}.overridden_costs END").to_f
     end
     
     def labor_costs
@@ -57,7 +57,7 @@ module IssuePatch
         WHEN #{TimeEntry.table_name}.overridden_costs IS NULL THEN
           #{TimeEntry.table_name}.costs
         ELSE
-          #{TimeEntry.table_name}.overridden_costs END")
+          #{TimeEntry.table_name}.overridden_costs END").to_f
     end
     
     def overall_costs