Comment 2 for bug 1152472

StacktraceTop:
 list_add_tail (head=0x7f8a000070b0, entry=0x7f89fc0008c8) at ../../libusb/libusbi.h:103
 add_to_flying_list (transfer=0x7f89fc0008c0) at ../../libusb/io.c:1196
 libusb_submit_transfer (transfer=transfer@entry=0x7f89fc000918) at ../../libusb/io.c:1306
 do_sync_bulk_transfer (dev_handle=0x7f8a00007910, endpoint=<optimized out>, buffer=buffer@entry=0x7f8a06ffcd50 "", length=length@entry=24, transferred=transferred@entry=0x7f8a06ffcd4c, timeout=timeout@entry=0, type=type@entry=2 '\002') at ../../libusb/sync.c:175
 libusb_bulk_transfer (dev_handle=<optimized out>, endpoint=<optimized out>, data=data@entry=0x7f8a06ffcd50 "", length=length@entry=24, transferred=transferred@entry=0x7f8a06ffcd4c, timeout=timeout@entry=0) at ../../libusb/sync.c:270