finder_sql patch problem

Hello, I have the finder_sql problem and I found this patch http://dev.rubyonrails.org/ticket/7576; but I don't know how to use this patch?? I copied all the changes into the correct files and restartet the server of my ruby on rails application, but nothing changed. Could someone tell me please how I have to use this patch??

Thanks Manfred

I resolved the problem.