[Actor] suppress potential false positive modernize-use-nullptr

emper/Actor.hpp

@@ -80,6 +80,9 @@ class Actor {
 		const auto start = std::chrono::steady_clock::now();
 		const auto deadline = start + std::chrono::milliseconds(timeout);
 		while (!(queue.size() == 0 && state.load(std::memory_order_acquire) == Retrieving)) {
+			// TODO: The suppressed linter error below may be a false positive
+			// reported by clang-tidy.
+			// NOLINTNEXTLINE(modernize-use-nullptr)
 			if (std::chrono::steady_clock::now() > deadline) {
 				return false;
 			}