Tweak retract_neighbour_routes.
Tweak retract_neighbour_routes.

jech/babeld,dtaht/babeld-shortrtt-metrics,wlanslovenija/babeld,jech/babeld,wlanslovenija/babeld,tcatm/babeld,woniullb/babeld,sudomesh/babeld,Gwendocg/babeldToS,boutier/babeld,Gwendocg/babeldToS,Drooids/babeld