If the file begin with single line Feed ('\n'), then
"AsciiChar == '\n' && ((CHAR8*)Buffer)[LoopVar-1] != '\r'"
would cause a underflow. Add this condition
"(AsciiChar == '\n' && LoopVar == 0)" before it to make sure
(LoopVar - 1) would never encounter a underflow.
Same change in Unicode section.
Cc: Jaben Carsey <jaben.carsey@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Andrew Fish <afish@apple.com> Signed-off-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Andrew Fish <afish@apple.com>