Don't crash with no batter unit

[Bastien Nocera]

Heya,

My test code crashed because I forgot to provide a battery unit member
to the struct.

BT:
#0  ReplyGetBattery (messagetype=<value optimized out>, buffer=0x61aef0 
"\002AT+CBC", length=27, data=0x61b300, state=<value optimized out>) at 
atgen.c:1433
#1  0x00002aaaaaadb743 in sm_incoming_function (messagetype=9 '\t', 
message=0x61aef0, messagesize=<value optimized out>, state=0x6243f8) at 
gsm-statemachine.c:127
#2  0x00002aaaaab186f6 in atbus_loop (timeout=<value optimized out>, 
sm=0x6243f8) at atbus.c:241
#3  0x00002aaaaaadb870 in gn_sm_loop (timeout=1, state=0x2c) at 
gsm-statemachine.c:82
#4  0x00002aaaaaadbb05 in __sm_block_timeout (waitfor=<value optimized out>, 
t=0, data=0x61b300, state=0x6243f8) at gsm-statemachine.c:272
#5  0x00002aaaaab11f61 in Functions (op=<value optimized out>, data=0x61b300, 
state=0x6243f8) at atgen.c:273

Patch attached.

-- 
Bastien Nocera <address@hidden>

gnokii-no-battery-unit.patch
Description: Text Data