* remove trailing spaces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58531 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rubygems/test_gem_commands_sources_command.rb

@@ -157,7 +157,7 @@ source http://gems.example.com/ already present in the cache
     EOF
 
     assert_equal expected, @ui.output
-    assert_equal '', @ui.error 
+    assert_equal '', @ui.error
   end
 
   def test_execute_add_http_rubygems_org