[clang-tools-extra] [clang-tidy] Fix false positive in misc-redundant-expression with type aliases (PR #198085)

[Zeyi Xu via cfe-commits]

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@@ -0,0 +1,24 @@
+// RUN: %check_clang_tidy %s misc-redundant-expression %t -- -- -std=c++17
+
+namespace std {
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zeyi2 wrote:

Nit: Could we move this test into existing files?

https://github.com/llvm/llvm-project/pull/198085