secure: can only work for IPv4, so assert on it
secure: can only work for IPv4, so assert on it

Because of:
  memcpy(&rrmsg.destination, to, olsr_cnf->ipsize);
with
  rrmsg.destination being an uint32_t

Signed-off-by: Ferry Huberts <66e11f9f5d965b69497c7e73d5e808f8b13c1218@pelagic.nl>

ninuxorg/olsrd,diogomg/olsrd,diogomg/olsrd,acinonyx/olsrd,nolith/olsrd,zioproto/olsrd,cholin/olsrd,zioproto/olsrd,zioproto/olsrd,tdz/olsrd,sebkur/olsrd,diogomg/olsrd-binary-heap,nolith/olsrd,tdz/olsrd,diogomg/olsrd-binary-heap,zioproto/olsrd,acinonyx/olsrd,acinonyx/olsrd,zioproto/olsrd,ninuxorg/olsrd,cholin/olsrd,ninuxorg/olsrd,nolith/olsrd,sebkur/olsrd,diogomg/olsrd-binary-heap,sebkur/olsrd,diogomg/olsrd-binary-heap,tdz/olsrd,cholin/olsrd,sebkur/olsrd,tdz/olsrd,acinonyx/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd,sebkur/olsrd,diogomg/olsrd,diogomg/olsrd-binary-heap,ninuxorg/olsrd,sebkur/olsrd,diogomg/olsrd,nolith/olsrd,cholin/olsrd,diogomg/olsrd,nolith/olsrd,tdz/olsrd,diogomg/olsrd,ninuxorg/olsrd,acinonyx/olsrd,cholin/olsrd,diogomg/olsrd-binary-heap