Comment 2 for bug 963102

StacktraceTop:
 ?? ()
 internal_queue_command (self=0x1755500, command=<optimized out>, take_command=1, cached=0, timeout_seconds=3, callback=0, user_data=0x0) at mm-serial-port.c:965
 mm_serial_port_queue_command (self=<optimized out>, command=<optimized out>, take_command=<optimized out>, timeout_seconds=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at mm-serial-port.c:1007
 disable_flash_done (port=0x1755500, error=<optimized out>, user_data=0x1794b70) at mm-generic-gsm.c:2081
 callback_info_done (user_data=0x178d770) at mm-callback-info.c:79