common: 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

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
1 file changed