socket/option.c: socket option variations

* ext/socket/option.c (NUM2SOCKOPT, sockopt_value): extract to wrap
  socket option variations.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44647 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
  * vm_trace.c: fix typo



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44648 b2dd03c8-39d4-4d8f-98ff-823fe69b080e