[Matrix]: remove one mem copy in fg2fm.
[Matrix]: remove one mem copy in fg2fm.

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