WiseRoute problem

[aarizaq]

The packet of type ROUTE_FLOOD doesn't have payload, the code try to copy the payload with length 0 that throw an exception

A possible solution is to check that the packet is of the type ROUTE_FLOOD and avoid the data copy

https://github.com/aarizaq/inetmanet-4.x/commit/6c1accf4e1b720606934df26d94ac573798fdf32