vcs.rb: fix after_export

* tool/vcs.rb (VCS#after_export): fix nesting.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/vcs.rb

@@ -128,9 +128,9 @@ class VCS
     else
       '.'
     end
+  end
 
-    def after_export(dir)
-    end
+  def after_export(dir)
   end
 
   class SVN < self