[clang] [clang][Sema] Move computing enum width and type to a separate function (PR #120965)

[via cfe-commits]

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@@ -3987,6 +3987,7 @@ class Sema final : public SemaBase {
                           SourceLocation IdLoc, IdentifierInfo *Id,
                           const ParsedAttributesView &Attrs,
                           SourceLocation EqualLoc, Expr *Val);
+
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Sirraide wrote:

```suggestion
```
This was probably accidental

https://github.com/llvm/llvm-project/pull/120965