[clang-tools-extra] [clang-doc] Serialize record files with mangled name (PR #148021)

[Paul Kirth via cfe-commits]

================
@@ -378,6 +378,7 @@ struct SymbolInfo : public Info {
   std::optional<Location> DefLoc;     // Location where this decl is defined.
   llvm::SmallVector<Location, 2> Loc; // Locations where this decl is declared.
   bool IsStatic = false;
+  SmallString<16> MangledName;
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ilovepi wrote:

```suggestion
  llvm::SmallVector<Location, 2> Loc; // Locations where this decl is declared.
  SmallString<16> MangledName;
  bool IsStatic = false;
```

https://github.com/llvm/llvm-project/pull/148021