Changed how GUIDs were compared in Ppi.c

MdeModulePkg/Core/Pei/Ppi/Ppi.c

@@ -223,7 +223,7 @@ ConvertPpiPointersFv (
   EFI_PEI_FIRMWARE_VOLUME_INFO_PPI  *FvInfoPpi;
   UINT8                             GuidIndex;
   EFI_GUID                          *Guid;
-  EFI_GUID                          (*GuidCheckList)[2];
+  EFI_GUID                          *GuidCheckList[2];
 
   GuidCheckList[0] = &gEfiPeiFirmwareVolumeInfoPpiGuid;
   GuidCheckList[1] = &gEfiPeiFirmwareVolumeInfo2PpiGuid;
@@ -324,16 +324,8 @@ ConvertPpiPointersFv (
 
     Guid = PrivateData->PpiData.PpiList.PpiPtrs[Index].Ppi->Guid;
     for (GuidIndex = 0; GuidIndex < ARRAY_SIZE (GuidCheckList); ++GuidIndex) {
-      //
-      // Don't use CompareGuid function here for performance reasons.
-      // Instead we compare the GUID as INT32 at a time and branch
-      // on the first failed comparison.
-      //
       // MU_CHANGE [BEGIN] - CodeQL change
-      if ((((INT32 *)Guid)[0] == ((INT32 *)(GuidCheckList[GuidIndex]))[0]) &&
-          (((INT32 *)Guid)[1] == ((INT32 *)(GuidCheckList[GuidIndex]))[1]) &&
-          (((INT32 *)Guid)[2] == ((INT32 *)(GuidCheckList[GuidIndex]))[2]) &&
-          (((INT32 *)Guid)[3] == ((INT32 *)(GuidCheckList[GuidIndex]))[3]))
+      if (CompareMem (Guid, GuidCheckList[GuidIndex], 16) == 0)
       // MU_CHANGE [END] - CodeQL change
       {
         FvInfoPpi = PrivateData->PpiData.PpiList.PpiPtrs[Index].Ppi->Ppi;