delegate.rb: refix r43682

* lib/delegate.rb (Delegator#send): separate from method_missing so
  that super calls proper method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43727 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-11-20

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43728 b2dd03c8-39d4-4d8f-98ff-823fe69b080e