[clang] [clang-repl] fix vtable symbol duplication error (closes #141039) (PR #185648)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- clang/test/Interpreter/virtualdef-outside.cpp clang/lib/CodeGen/CGVTables.cpp clang/lib/CodeGen/CodeGenModule.cpp clang/lib/CodeGen/CodeGenModule.h clang/lib/CodeGen/ItaniumCXXABI.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index 7fafe137a..14a94a18a 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -1579,9 +1579,7 @@ public:
     DeferredVTables.push_back(RD);
   }
 
-  void markVTableDefined(const CXXRecordDecl *RD) {
-    DefinedVTables.insert(RD);
-  }
+  void markVTableDefined(const CXXRecordDecl *RD) { DefinedVTables.insert(RD); }
 
   /// Emit code for a single global function or var decl. Forward declarations
   /// are emitted lazily.

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https://github.com/llvm/llvm-project/pull/185648