enum.c: fix condition to recycle block argument
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45603 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
enum.c: fix condition to recycle block argument
argument. lambda with rest can get internal array directly.
[ruby-core:62060] [Bug #9749]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45603 b2dd03c8-39d4-4d8f-98ff-823fe69b080e