Kill trailing whitespace in ruby files

test/functional/post_votes_controller_test.rb

@@ -8,12 +8,12 @@ class PostVotesControllerTest < ActionController::TestCase
       CurrentUser.ip_addr = "127.0.0.1"
       @post = FactoryGirl.create(:post)
     end
-    
+
     teardown do
       CurrentUser.user = nil
       CurrentUser.ip_addr = nil
     end
-    
+
     context "create action" do
       should "increment a post's score if the score is positive" do
         post :create, {:post_id => @post.id, :score => "up", :format => "js"}, {:user_id => @user.id}
@@ -21,12 +21,12 @@ class PostVotesControllerTest < ActionController::TestCase
         @post.reload
         assert_equal(1, @post.score)
       end
-      
+
       context "for a post that has already been voted on" do
         setup do
           @post.vote!("up")
         end
-        
+
         should "fail silently on an error" do
           assert_nothing_raised do
             post :create, {:post_id => @post.id, :score => "up", :format => "js"}, {:user_id => @user.id}