[clang] [clang][bytecode] Don't diagnose defined functions that will have a body (PR #165002)

[Shafik Yaghmour via cfe-commits]

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@@ -997,7 +997,7 @@ static bool CheckCallable(InterpState &S, CodePtr OpPC, const Function *F) {
       // If the declaration is defined, declared 'constexpr' _and_ has a body,
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shafik wrote:

We should update the comment to reflect the change in the code below.

https://github.com/llvm/llvm-project/pull/165002