Update code to support VS2013 tool chain.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15695 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c

@@ -2,7 +2,7 @@
 
   Internal generic functions to operate flash block.
 
-Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials                          
 are licensed and made available under the terms and conditions of the BSD License         
 which accompanies this distribution.  The full text of the license may be found at        
@@ -164,6 +164,7 @@ GetFvbByAddress (
 
   *FvBlock  = NULL;
   FvbHandle = NULL;
+  HandleBuffer = NULL;
   //
   // Locate all handles of Fvb protocol
   //
@@ -1019,6 +1020,8 @@ FindFvbForFtw (
   EFI_FV_BLOCK_MAP_ENTRY              *FvbMapEntry;
   UINT32                              LbaIndex;
 
+  HandleBuffer = NULL;
+
   //
   // Get all FVB handle.
   //