xyzModem.c: fix 'dummy' is used uninitialized in this function warning
fix this gcc 4.4 warning:
xyzModem.c: In function 'xyzModem_stream_open':
xyzModem.c:564: warning: 'dummy' is used uninitialized in this function
Copied from U-Boot
Signed-off-by: Fabio Porcedda <fabio.porcedda@telit.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>