Fix: netstat -rs

Routing statistics requires somes symbols that are only loaded when not running
live. Load them only in that specific case

PR:		242423
Submitted by:	olivier
MFC after:	3 days

usr.bin/netstat/main.c

@@ -484,6 +484,9 @@ main(int argc, char *argv[])
 	if (rflag) {
 		xo_open_container("statistics");
 		if (sflag) {
+			if (live) {
+				kresolve_list(nl);
+			}
 			rt_stats();
 		} else
 			routepr(fib, af);