Use VirtualAlloc() to allocate enough memory space for Nt32 emulator in place of original mapped file to memory space.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4068 6f19259b-4bc3-4df7-8a09-765794883524

Nt32Pkg/Sec/SecMain.h

@@ -47,15 +47,11 @@ typedef struct {
   UINT64                Size;
 } NT_FD_INFO;
 
-#define NT_SYSTEM_MEMORY_FILENAME_SIZE  40
-
 typedef struct {
-  CHAR16                FileName[NT_SYSTEM_MEMORY_FILENAME_SIZE];
   EFI_PHYSICAL_ADDRESS  Memory;
   UINT64                Size;
 } NT_SYSTEM_MEMORY;
 
-
 #define MAX_PDB_NAME_TO_MOD_HANDLE_ARRAY_SIZE 0x100
 
 typedef struct {