[clang] [win][clang] Align scalar deleting destructors with MSABI (PR #139566)

[Tom Honermann via cfe-commits]

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@@ -1590,25 +1590,70 @@ namespace {
   void EmitConditionalDtorDeleteCall(CodeGenFunction &CGF,
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tahonermann wrote:

This function is only ever called for a deleting destructor (and when `CXXStructorImplicitParamValue` is non-null). I don't think there is a reasonable way to assert that here, but it might be worth adding a comment. The function name is fine, but it wasn't sufficient for me to recognize that this function is only applicable to deleting destructors until I audited all of the call sites.

https://github.com/llvm/llvm-project/pull/139566