vm_eval.c: no use of SYM2ID
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_eval.c: no use of SYM2ID
symbol temporarily to get rid of use of SYM2ID.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e