engines/libaio: fix wrong setting of wait_start

Signed-off-by: Jens Axboe <axboe@fb.com>
crc/test: fix potential div by zero

Signed-off-by: Jens Axboe <axboe@fb.com>
sha256: cast shift to uint64_t

Signed-off-by: Jens Axboe <axboe@fb.com>
t/dedupe: fix bogus items NULL compare

Signed-off-by: Jens Axboe <axboe@fb.com>
t/btrace2fio: fix fd leak on error

Signed-off-by: Jens Axboe <axboe@fb.com>
client: fix potential NULL dereference

Signed-off-by: Jens Axboe <axboe@fb.com>