avoid using rescue in its modifier form at AttachmentsController#find_container

git-svn-id: http://svn.redmine.org/redmine/trunk@19863 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/attachments_controller.rb

@@ -218,7 +218,12 @@ class AttachmentsController < ApplicationController
   end
 
   def find_container
-    klass = params[:object_type].to_s.singularize.classify.constantize rescue nil
+    klass =
+      begin
+        params[:object_type].to_s.singularize.classify.constantize
+      rescue
+        nil
+      end
     unless klass && klass.reflect_on_association(:attachments)
       render_404
       return