compile.c: omit unnecessary defined guard
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
compile.c: omit unnecessary defined guard
method call has no receiver and no arguments.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e