[B.A.T.M.A.N.] [PATCH maint 2/2] batman-adv: Ignore invalid batadv_v_gw during netlink send

The function batadv_v_gw_dump stops the processing loop when batadv_v_gw_dump_entry returns a non-0 return code. This should only happen when the buffer is full. Otherwise, an empty message may be returned by batadv_gw_dump. This empty message will then stop the netlink dumping of gateway entries.

[B.A.T.M.A.N.] [PATCH maint 1/2] batman-adv: Ignore invalid batadv_iv_gw during netlink send

The function batadv_iv_gw_dump stops the processing loop when batadv_iv_gw_dump_entry returns a non-0 return code. This should only happen when the buffer is full. Otherwise, an empty message may be returned by batadv_gw_dump. This empty message will then stop the netlink dumping of gateway entries