[clang] [Clang] Fix constexpr-ness on implicitly deleted destructors (PR #116359)

[via cfe-commits]

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@@ -546,9 +546,9 @@ void CXXRecordDecl::addedClassSubobject(CXXRecordDecl *Subobj) {
     data().NeedOverloadResolutionForDestructor = true;
   }
 
-  // C++2a [dcl.constexpr]p4:
-  //   The definition of a constexpr destructor [shall] satisfy the
-  //   following requirement:
+  // C++20 [dcl.constexpr]p5:
+  //  The definition of a constexpr destructor whose function-body is not
+  //  = delete [shall] additionally satisfy the following requirement:
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cor3ntin wrote:

```suggestion
  //  = delete shall additionally satisfy the following requirement:
```

https://github.com/llvm/llvm-project/pull/116359