When the FilePattern is similar to "fsx:EFI\BOOT", FindFiles()
cannot handle it correctly because it always assumes there is
"\\" after "fsx:".
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Tapan Shah <tapandshah@hpe.com>