[clang] [Clang] support friend declarations with a dependent nested-name-specifier (PR #191268)

[Matheus Izvekov via cfe-commits]

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@@ -274,6 +275,99 @@ struct AccessTarget : public AccessedEntity {
 
 }
 
+static bool CanDeduceTemplateArguments(Sema &S, TemplateParameterList *TPL,
+                                       ArrayRef<TemplateArgument> PatternArgs,
+                                       ArrayRef<TemplateArgument> Args,
+                                       SourceLocation Loc) {
+  if (PatternArgs.size() != Args.size())
+    return false;
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mizvekov wrote:

That's redundant with the check below

https://github.com/llvm/llvm-project/pull/191268