More minor cleanup after laster squashed merge.

net/route/net_queue_ramroute.c

@@ -42,6 +42,8 @@
 #include "route/ramroute.h"
 #include "route/route.h"
 
+#if defined(CONFIG_ROUTE_IPv4_RAMROUTE) || defined(CONFIG_ROUTE_IPv6_RAMROUTE)
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -223,3 +225,5 @@ FAR struct net_route_ipv6_entry_s *
   return ret;
 }
 #endif
+
+#endif /* CONFIG_ROUTE_IPv4_RAMROUTE || CONFIG_ROUTE_IPv4_RAMROUTE */