[Patch] IntelSiliconPkg: Declare zero array explicitly to avoid compiler error.

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

This patch fixes a potential compiler error introduced by commit
b0099a39bd since not all compiler can support empty array member.

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>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
---
 .../Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h b/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h
index d1a9d79a51..d887b39123 100644
--- a/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h
+++ b/Silicon/Intel/IntelSiliconPkg/Include/Guid/MicrocodeShadowInfoHob.h
@@ -33,7 +33,7 @@ typedef struct {
   // An array with MicrocodeCount elements that stores
   // the shadowed microcode patch address in memory.
   //
-  UINT64    MicrocodeAddrInMemory[];
+  UINT64    MicrocodeAddrInMemory[0];
   //
   // A buffer which contains details about the storage information
   // specific to StorageType.
-- 
2.19.1.windows.1