threads: fix whitespaces in barrier test

tests/test-barrier.cpp

@@ -54,15 +54,15 @@ int main(int argc, char *argv[]) {
         fprintf(stderr, "threadpool create failed : n_threads %d\n", n_threads);
         exit(1);
     }
-    
+
     // Create compute plan
     struct ggml_cplan cplan = ggml_graph_plan(gf, n_threads, threadpool);
 
     std::vector<uint8_t> work_data(cplan.work_size);
     cplan.work_data = work_data.data();
 
     std::cerr << "graph-compute with"
-              << "\n n_threads: " << n_threads 
+              << "\n n_threads: " << n_threads
               << "\n   n_nodes: " << n_nodes
               << "\n  n_rounds: " << n_rounds
               << "\n";
@@ -81,7 +81,7 @@ int main(int argc, char *argv[]) {
 
     auto usec = std::chrono::duration_cast<std::chrono::microseconds>(t1-t0).count();
     auto nsec = std::chrono::duration_cast<std::chrono::nanoseconds>(t1-t0).count();
-    std::cerr << "graph-compute took " << usec << " usec " 
+    std::cerr << "graph-compute took " << usec << " usec "
               << "\n " << (float) usec / n_rounds << " usec per-iter"
               << "\n " << (float) nsec / (n_rounds * n_nodes) << " nsec per-node"
               << "\n";