Validate attachment description length (#11365).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9984 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/attachment.rb

@@ -24,6 +24,7 @@ class Attachment < ActiveRecord::Base
   validates_presence_of :filename, :author
   validates_length_of :filename, :maximum => 255
   validates_length_of :disk_filename, :maximum => 255
+  validates_length_of :description, :maximum => 255
   validate :validate_max_file_size
 
   acts_as_event :title => :filename,