[clang] [Sema] Propagate preferred_name attribute to existing specializations (PR #186741)

[Younan Zhang via cfe-commits]

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@@ -1209,7 +1209,6 @@ static void handlePreferredName(Sema &S, Decl *D, const ParsedAttr &AL) {
     TSI = S.Context.getTrivialTypeSourceInfo(T, AL.getLoc());
 
   if (!T.hasQualifiers() && T->isTypedefNameType()) {
-    // Find the template name, if this type names a template specialization.
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zyn0217 wrote:

Why do you remove this line?

https://github.com/llvm/llvm-project/pull/186741