Fix inetd wrong AF check for RPC services

Incorrect Address Family check is done for RPC services, and
   fail to initialize it.
   The error check is replaced to new one, which checks if IPv4
   bind is enabled or not. (It is disabled when IPv6 numeric
   addr is specified for -a bind address option.)

An review reqeust is once sent to des, but he quit MAINTAINER.

Approved by: jkh

usr.sbin/inetd/inetd.c

@@ -1522,8 +1522,9 @@ getconfigent()
 	} else
 		sep->se_proto = newstr(arg);
         if (strncmp(sep->se_proto, "rpc/", 4) == 0) {
-		if (sep->se_family != AF_INET) {
-			syslog(LOG_ERR, "IPv6 for RPC is not supported yet");
+		if (no_v4bind != 0) {
+			syslog(LOG_INFO, "IPv4 bind is ignored for %s",
+			       sep->se_service);
 			freeconfig(sep);
 			goto more;
 		}