fix netstat -rs

[bapt]

Summary

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

[olivier]

Working great :-)

[root@fbsd]~# netstat -rs
routing:
        0 bad routing redirects
        0 dynamically created routes
        0 new gateways due to redirects
        0 destinations found unreachable
        0 uses of a wildcard route
        0 routes not in table but not freed

[bapt]

committed as rS355554