Possible null pointer dereference in batman's update_routes

Hi,
I am not sure but I think it could be possible that there is a null pointer dereference at batman.c:420
I assume that it is possible that neigh_node is NULL and orig_node->router is also NULL in batman.c:412. Now we dereference neigh_node in batman.c:420 as third parameter of add_del_route.
I don't know if the third parameter should be set to 0 if neigh_node is NULL or if the "if"-statement is wrong - so i will not send a patch this time.

Best regards,
Sven

Hi,

this one is a bit tricky (may be we should add a comment there). In line 386 we prevent that null pointer dereference:

orig_node->router != neigh_node

If both variables are NULL it would fail here. :-)

Greetings,
Marek