[Crash-utility] typo affects kmem -S error output

Dave, This patch fixes a typo in memory.c. Before: ======= crash> kmem -S sctp_bind_bucket ... kmem: "sctp_bind_bucket" cache: object 0 on both free and cpu 651223584 lists ... (Note cpu number) After: ====== crash> kmem -S sctp_bind_bucket ... kmem: "sctp_bind_bucket" cache: object ffff810126d0e220 on both free and cpu 0 lists ... Bob Montgomery Working at HP in Fort Collins