[Matrix]: fix a bug in get_portion of NUMA_matrix_store.
[Matrix]: fix a bug in get_portion of NUMA_matrix_store.

icoming/FlashX,icoming/FlashGraph,flashxio/FlashX,flashxio/FlashX,zheng-da/FlashX,flashxio/FlashX,icoming/FlashGraph,zheng-da/FlashX,icoming/FlashX,icoming/FlashX,icoming/FlashX,flashxio/FlashX,icoming/FlashGraph,icoming/FlashX,icoming/FlashGraph,zheng-da/FlashX,flashxio/FlashX,zheng-da/FlashX,icoming/FlashGraph,zheng-da/FlashX,flashxio/FlashX