Fixes editing an issue's deliverable.

Broken by the Redmine core in r3308.

lib/budget_issue_hook.rb

@@ -48,6 +48,13 @@ class BudgetIssueHook  < Redmine::Hook::ViewListener
     end
   end
 
+  def controller_issues_edit_before_save(context = {})
+    if context[:params] && context[:params][:issue]
+      context[:issue].deliverable = Deliverable.find_by_id_and_project_id(context[:params][:issue][:deliverable_id], context[:issue].project.id)
+    end
+    return ''
+  end
+  
   # Saves the Deliverable assignment to the issue
   #
   # Context: