[clang-tools-extra] [clang-tidy] Prevent false-positive in presence of derived-to-base cast in bugprone.use-after-move (PR #189638)

[Zeyi Xu via cfe-commits]

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@@ -28,6 +28,7 @@ using namespace clang::tidy::utils;
 
 namespace clang::tidy::bugprone {
 
+using ast_matchers::optionally;
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zeyi2 wrote:

This appears redundant if `using namespace clang::ast_matchers;` already exists in the file

https://github.com/llvm/llvm-project/pull/189638