MdeModulePkg ScsiDiskDxe: Close event when SCSI command fails

MdeModulePkg ScsiDiskDxe: Close event when SCSI command fails

The functions ScsiRead10CommandEx(), ScsiWrite10CommandEx(),
ScsiRead16CommandEx() and ScsiWrite16CommandEx() in UefiScsiLib will not
signal the event passed from ScsiDiskDxe when error occurs.

In this case, ScsiDiskDxe should close the event passing to these APIs in
UefiScsiLib.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19449 6f19259b-4bc3-4df7-8a09-765794883524