net/gnrc_netif_lorawan: fix unaligned copy
net/gnrc_netif_lorawan: fix unaligned copy

authmillenon/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,kaspar030/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,miri64/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,jasonatran/RIOT,kYc0o/RIOT,kYc0o/RIOT,jasonatran/RIOT,miri64/RIOT,OlegHahm/RIOT,kaspar030/RIOT,OlegHahm/RIOT,ant9000/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,ant9000/RIOT,kYc0o/RIOT,jasonatran/RIOT,OlegHahm/RIOT,jasonatran/RIOT,miri64/RIOT,jasonatran/RIOT,OlegHahm/RIOT,kaspar030/RIOT,ant9000/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,ant9000/RIOT,OTAkeys/RIOT,authmillenon/RIOT,OTAkeys/RIOT,miri64/RIOT,kaspar030/RIOT,OlegHahm/RIOT,ant9000/RIOT,authmillenon/RIOT,miri64/RIOT,authmillenon/RIOT,authmillenon/RIOT