Kill trailing whitespace in erb files

app/views/forum_topics/show.html.erb

@@ -6,7 +6,7 @@
         (deleted)
       <% end %>
     </h1>
-    
+
     <% if @forum_topic.is_locked? %>
       <div class="notice">
         <p>This topic has been locked.</p>
@@ -14,13 +14,13 @@
     <% end %>
 
     <%= render "forum_posts/listing", :forum_posts => @forum_posts %>
-    
+
     <p><%= link_to "Reply &raquo;".html_safe, new_forum_post_path(:topic_id => @forum_topic.id), :id => "new-response-link" %></p>
-    
+
     <div style="display: none;" id="topic-response">
       <%= render "forum_posts/form", :forum_post => ForumPost.new(:topic_id => @forum_topic.id) %>
     </div>
-    
+
     <%= numbered_paginator(@forum_posts) %>
   </div>
 </div>
@@ -40,7 +40,7 @@
         $('html, body').animate({
             scrollTop: $("#forum_post_body").offset().top - 100
         }, 500);
-        
+
         e.preventDefault();
       })
     });