MdeModulePkg/AtaAtapiPassThru: Fix VS2010/VS2012 build failure
MdeModulePkg/AtaAtapiPassThru: Fix VS2010/VS2012 build failure

The patch doesn't have functionality impact. It is just to make
VS2010/VS2012 happy.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <9fa3a6894a36bca79e6a72ad65af5a5702efecd1@intel.com>
Reviewed-by: Dandan Bi <1e8692d8ed8470b17e8ddd7612a0f029768dcb56@intel.com>

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2