[clang] [clang] fix a crash for uses of a pseudo-destructor of enum without definition (PR #210424)

[Erich Keane via cfe-commits]

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@@ -41,7 +41,7 @@ static CXXRecordDecl *getCurrentInstantiationOf(QualType T,
 
 DeclContext *Sema::computeDeclContext(QualType T) {
   if (!T->isDependentType())
-    if (auto *D = T->getAsTagDecl())
+    if (auto *D = T->getAsRecordDecl())
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erichkeane wrote:

The question here was what it now falls back to, but yes, there is no 'current instantation of' enum, and now that I look closer (it spends more time looking at Tag type than is comforting :D), it'll return enum.

I have some MILD discomfort here, but not enough to hold up this patch/merge.  so LGTM.

https://github.com/llvm/llvm-project/pull/210424