MapMemory is not initialized by FindGuardedMemoryMap
or CoreInternalAllocatePages which calls MapMemory.
So we give a 0 to it.
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Dandan Bi <dandan.bi@intel.com>