Merged rails-3.2 branch.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9528 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/wiki_controller.rb

@@ -163,6 +163,8 @@ class WikiController < ApplicationController
     # Optimistic locking exception
     flash.now[:error] = l(:notice_locking_conflict)
     render :action => 'edit'
+  rescue ActiveRecord::RecordNotSaved
+    render :action => 'edit'
   end
 
   # rename a page