[clang] [libcxx] [llvm] Add unnecessary-virtual-specifier to -Wextra (PR #138741)

[via llvm-commits]

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@@ -16,6 +16,7 @@ _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wtautological-constant-out-of-range-compare")
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace {
+// Whitespace change DO NOT MERGE
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Sirraide wrote:

👀

https://github.com/llvm/llvm-project/pull/138741