Update cpp/benchmarks/threadpool/threadpool_benchmark.cpp

Co-authored-by: Mads R. B. Kristensen <[email protected]>

Author: kingcrimsontianyu

cpp/benchmarks/threadpool/threadpool_benchmark.cpp

@@ -59,7 +59,7 @@ void BM_threadpool_compute(benchmark::State& state)
     // Submit a total of "num_compute_tasks" tasks to the thread pool.
     for (auto i = std::size_t{0}; i < num_compute_tasks; ++i) {
       [[maybe_unused]] auto fut = kvikio::defaults::thread_pool().submit_task(
-        [num_compute_iterations = num_compute_iterations] {
+        [num_compute_iterations] {
           task_compute(num_compute_iterations);
         });
     }