Kill trailing whitespace in ruby files

app/helpers/post_flags_helper.rb

@@ -2,24 +2,24 @@ module PostFlagsHelper
   def post_flag_reasons(post)
     html = []
     html << '<ul>'
-    
+
     post.flags.each do |flag|
       html << '<li>'
       html << DText.parse_inline(flag.reason).html_safe
-      
+
       if CurrentUser.is_janitor?
         html << ' - ' + link_to(flag.creator.name, user_path(flag.creator))
       end
 
       html << ' - ' + time_ago_in_words_tagged(flag.created_at)
-      
+
       if flag.is_resolved?
         html << ' <span class="resolved">RESOLVED</span>'
       end
-      
+
       html << '</li>'
     end
-    
+
     html << '</ul>'
     html.join("\n").html_safe
   end