[clang] [Clang] disallow attributes on void parameters (PR #124920)

[Aaron Ballman via cfe-commits]

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@@ -107,6 +107,8 @@ Removed Compiler Flags
 Attribute Changes in Clang
 --------------------------
 
+- Clang now disallows the use of attributes on void parameters. (#GH108819)
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AaronBallman wrote:

```suggestion
- Clang now diagnoses use of declaration attributes on void parameters. (#GH108819)
```

https://github.com/llvm/llvm-project/pull/124920