[SAFS]: fix a minor bug in div_ceil.
[SAFS]: fix a minor bug in div_ceil.

icoming/FlashX,icoming/FlashX,flashxio/FlashX,icoming/FlashX,flashxio/FlashX,flashxio/FlashX,icoming/FlashX,icoming/FlashX,flashxio/FlashX,flashxio/FlashX,flashxio/FlashX