[PATCH] MdePkg/BaseLib: Re-define CHAR_NULL in BaseLib

["Song, BinX" <binx.song@intel.com>]

- https://bugzilla.tianocore.org/show_bug.cgi?id=172

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Bell Song <binx.song@intel.com>
---
 MdePkg/Include/Base.h              | 7 +++++++
 MdePkg/Library/BaseLib/FilePaths.c | 2 --
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index 2217058..0c3318f 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -338,6 +338,13 @@ struct _LIST_ENTRY {
 ///
 #define NULL  ((VOID *) 0)
 
+//
+// Required unicode control chars
+//
+#ifndef CHAR_NULL
+#define CHAR_NULL  0x0000
+#endif
+
 ///
 /// Maximum values for common UEFI Data Types
 ///
diff --git a/MdePkg/Library/BaseLib/FilePaths.c b/MdePkg/Library/BaseLib/FilePaths.c
index c8da6bb..183b323 100644
--- a/MdePkg/Library/BaseLib/FilePaths.c
+++ b/MdePkg/Library/BaseLib/FilePaths.c
@@ -10,10 +10,8 @@
   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 **/
-#include  <Uefi/UefiBaseType.h>
 #include  <Library/BaseMemoryLib.h>
 #include  <Library/BaseLib.h>
-#include  <Protocol/SimpleTextIn.h>
 
 /**
   Removes the last directory or file entry in a path by changing the last
-- 
2.7.2.windows.1