guard against adhoc_pick_channel returning a NULL channel; this can happen after a scan cache flush (e.g. in response to ifconfig wlan bssid -)
guard against adhoc_pick_channel returning a NULL channel; this can
happen after a scan cache flush (e.g. in response to ifconfig wlan bssid -)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase