[Patch] IntelSiliconPkg/ShadowMicrocodePei: Fix GCC build error.

["Siyuan, Fu" <siyuan.fu@intel.com>]

This patch fixes compiler error introduced by commit
b0099a39bd.

BZ: https://tianocore.acgmultimedia.com/show_bug.cgi?id=2449
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
---
 .../Feature/ShadowMicrocode/ShadowMicrocodePei.c                | 2 +-
 .../Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Silicon/Intel/IntelSiliconPkg/Feature/ShadowMicrocode/ShadowMicrocodePei.c b/Silicon/Intel/IntelSiliconPkg/Feature/ShadowMicrocode/ShadowMicrocodePei.c
index 7e4084247e..8d6574f667 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/ShadowMicrocode/ShadowMicrocodePei.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/ShadowMicrocode/ShadowMicrocodePei.c
@@ -247,7 +247,7 @@ ShadowMicrocodePatchWorker (
       (VOID *) Patches[Index].Address,
       Patches[Index].Size
       );
-    MicrocodeAddressInMemory[Index] = (UINT64) Walker;
+    MicrocodeAddressInMemory[Index] = (UINT64) (UINTN) Walker;
     Flashcontext->MicrocodeAddressInFlash[Index]  = (UINT64) Patches[Index].Address;
     Walker += Patches[Index].Size;
   }
diff --git a/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h b/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h
index d887b39123..1daae1234a 100644
--- a/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h
+++ b/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h
@@ -58,7 +58,7 @@ typedef struct {
   // microcode patch address on flash. The address is placed in same
   // order as the microcode patches in MicrocodeAddrInMemory.
   //
-  UINT64  MicrocodeAddressInFlash[];
+  UINT64  MicrocodeAddressInFlash[0];
 } EFI_MICROCODE_STORAGE_TYPE_FLASH_CONTEXT;
 
 #endif
-- 
2.19.1.windows.1