All users updated. (free_rsm): Free header as well. (free_old_fragments): Fix memory leak. * grub-core/net/netbuff.c (grub_netbuff_free): Make return void. * grub-core/net/tftp.c (tftp_receive): Fix memory leak. (destroy_pq): Likewise. * include/grub/net/netbuff.h (grub_netbuff_free): Make return void.