* ext/openssl/ossl_ssl.c (ossl_sslctx_set_ssl_version): use
rb_sym2str to get rid of inadvertent ID creations.
* ext/socket/ancdata.c (ancillary_inspect): ditto.
* ext/socket/option.c (sockopt_inspect): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e