break after alloc failed in benchmark

sample/sample_benchmark_coroutine.cpp

@@ -89,6 +89,7 @@ int main(int argc, char *argv[]) {
             fprintf(stderr, "coroutine create failed, the real number is %d, ret: %d\n", i, res);
             fprintf(stderr, "maybe sysconf [vm.max_map_count] extended?\n");
             max_coroutine_number = i;
+            break;
         }
     }
 

sample/sample_benchmark_coroutine_stack_pool.cpp

@@ -80,6 +80,7 @@ static void benchmark_round(int index) {
             fprintf(stderr, "coroutine create failed, the real number is %d\n", i);
             fprintf(stderr, "maybe sysconf [vm.max_map_count] extended?\n");
             MAX_COROUTINE_NUMBER = i;
+            break;
         }
     }
 

sample/sample_benchmark_task.cpp

@@ -79,6 +79,7 @@ int main(int argc, char *argv[]) {
             fprintf(stderr, "create coroutine task failed, real size is %d.\n", static_cast<int>(task_arr.size()));
             fprintf(stderr, "maybe sysconf [vm.max_map_count] extended.\n");
             max_task_number = static_cast<int>(task_arr.size());
+            break;
         }
         task_arr.push_back(new_task);
     }

sample/sample_benchmark_task_stack_pool.cpp

@@ -106,6 +106,7 @@ static void benchmark_round(int index) {
             fprintf(stderr, "create coroutine task failed, real size is %d.\n", static_cast<int>(task_arr.size()));
             fprintf(stderr, "maybe sysconf [vm.max_map_count] extended.\n");
             max_task_number = static_cast<int>(task_arr.size());
+            break;
         } else {
             task_arr.push_back(my_task_t::create(my_task_action, 0));
         }