You can now write the following without warning.

    user = User.all.find {|user| cond(user) }

Fixes [Feature #12490].
A patch from Soutaro Matsumoto <matsumoto@soutaro.com>.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65369 b2dd03c8-39d4-4d8f-98ff-823fe69b080e