use malloc() instead of alloca() and free after use
use malloc() instead of alloca() and free after use

eworm-de/yubico-pam,eworm-de/yubico-pam,madrat-/yubico-pam,madrat-/yubico-pam,Yubico/yubico-pam,eworm-de/yubico-pam,Yubico/yubico-pam,Yubico/yubico-pam,madrat-/yubico-pam