[clang] Fix to msvc::no_unique_address causing assert when used with __declspec(empty_bases) (PR #74776)

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git-clang-format --diff c6805ea44af3bfd57e6b46f2d65ec6b0d0d6c64a c3dedfd535f037fb54a8e04640f9332e655a9a7d -- clang/lib/AST/RecordLayoutBuilder.cpp clang/test/Layout/ms-x86-declspec-empty_bases.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/AST/RecordLayoutBuilder.cpp b/clang/lib/AST/RecordLayoutBuilder.cpp
index 73b248ffe5..4af8770db2 100644
--- a/clang/lib/AST/RecordLayoutBuilder.cpp
+++ b/clang/lib/AST/RecordLayoutBuilder.cpp
@@ -2267,9 +2267,12 @@ ItaniumRecordLayoutBuilder::updateExternalFieldOffset(const FieldDecl *Field,
 /// \returns diagnostic %select index.
 static unsigned getPaddingDiagFromTagKind(TagTypeKind Tag) {
   switch (Tag) {
-  case TTK_Struct: return 0;
-  case TTK_Interface: return 1;
-  case TTK_Class: return 2;
+  case TTK_Struct:
+    return 0;
+  case TTK_Interface:
+    return 1;
+  case TTK_Class:
+    return 2;
   default: llvm_unreachable("Invalid tag kind for field padding diagnostic!");
   }
 }
@@ -2300,15 +2303,13 @@ void ItaniumRecordLayoutBuilder::CheckFieldPadding(
     if (D->getIdentifier())
       Diag(D->getLocation(), diag::warn_padded_struct_field)
           << getPaddingDiagFromTagKind(D->getParent()->getTagKind())
-          << Context.getTypeDeclType(D->getParent())
-          << PadSize
+          << Context.getTypeDeclType(D->getParent()) << PadSize
           << (InBits ? 1 : 0) // (byte|bit)
           << D->getIdentifier();
     else
       Diag(D->getLocation(), diag::warn_padded_struct_anon_field)
           << getPaddingDiagFromTagKind(D->getParent()->getTagKind())
-          << Context.getTypeDeclType(D->getParent())
-          << PadSize
+          << Context.getTypeDeclType(D->getParent()) << PadSize
           << (InBits ? 1 : 0); // (byte|bit)
  }
  if (isPacked && Offset != UnpackedOffset) {

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https://github.com/llvm/llvm-project/pull/74776