add empty line after guard clause to app/models/wiki_page.rb

git-svn-id: http://svn.redmine.org/redmine/trunk@20250 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/wiki_page.rb

@@ -90,8 +90,8 @@ class WikiPage < ActiveRecord::Base
     if attrs.respond_to?(:to_unsafe_hash)
       attrs = attrs.to_unsafe_hash
     end
-
     return unless attrs.is_a?(Hash)
+
     attrs = attrs.deep_dup
 
     # Project and Tracker must be set before since new_statuses_allowed_to depends on it.