Add more code robustness check for modules under MdeModulePkg.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10108 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWrite.c

@@ -40,7 +40,7 @@
   If one of them is not satisfied, FtwWrite may fail.
   Usually, Spare area only takes one block. That's SpareAreaLength = BlockSize, NumberOfSpareBlock = 1.
 
-Copyright (c) 2006 - 2009, Intel Corporation                                                         
+Copyright (c) 2006 - 2010, Intel Corporation                                                         
 All rights reserved. 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        
@@ -837,6 +837,7 @@ FtwGetLastWrite (
       *Complete = TRUE;
       return EFI_NOT_FOUND;
     }
+    ASSERT (Record != NULL);
   }
 
   //