option.c: fix macro name

* ext/socket/option.c (optname_to_sym): fix macro name.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40191 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,4 +1,6 @@
-Tue Apr  9 00:28:40 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Tue Apr  9 02:40:53 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/socket/option.c (optname_to_sym): fix macro name.
 
 	* ext/socket/constants.c (rsock_cmsg_type_arg): fix macro name.
 

ext/socket/option.c

@@ -21,7 +21,7 @@ optname_to_sym(int level, int optname)
         return constant_to_sym(optname, rsock_intern_so_optname);
       case IPPROTO_IP:
         return constant_to_sym(optname, rsock_intern_ip_optname);
-#ifdef INET6
+#ifdef IPPROTO_IPV6
       case IPPROTO_IPV6:
         return constant_to_sym(optname, rsock_intern_ipv6_optname);
 #endif