scard: apduio_t0: move buffer to struct sc_apduio_t0
scard: apduio_t0: move buffer to struct sc_apduio_t0

Instead of placing interim buffer on the stack, place it in the
allocated structure containing scard-specific data.

Signed-off-by: Dmitry Eremin-Solenikov <b6edad08270b2e4ffbcb0879e25a0e29a48c5275@gmail.com>

lumag/emv-tools