neighbors: signal link changes when deleting a neighbor
neighbors: signal link changes when deleting a neighbor

Reported-by: Koen Swinters <841467b35209b827973990d5e4f31f131a35aee1@otnsystems.com>
Signed-off-by: Ferry Huberts <66e11f9f5d965b69497c7e73d5e808f8b13c1218@pelagic.nl>

diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap