Ensure execution concurrency level is at least 1 (#17744)

* Ensure execution concurrency level is at least 1

* lint

* lint

* lint

Author: just-in-chang

aptos-node/src/utils.rs

@@ -13,7 +13,6 @@ use aptos_types::{
 };
 use aptos_vm::AptosVM;
 use aptos_vm_environment::prod_configs::set_paranoid_type_checks;
-use std::cmp::min;
 
 /// Error message to display when non-production features are enabled
 pub const ERROR_MSG_BAD_FEATURE_FLAGS: &str = r#"
@@ -52,10 +51,7 @@ pub fn fetch_chain_id(db: &DbReaderWriter) -> anyhow::Result<ChainId> {
 pub fn set_aptos_vm_configurations(node_config: &NodeConfig) {
     set_paranoid_type_checks(node_config.execution.paranoid_type_verification);
     let effective_concurrency_level = if node_config.execution.concurrency_level == 0 {
-        min(
-            DEFAULT_EXECUTION_CONCURRENCY_LEVEL,
-            (num_cpus::get() / 2) as u16,
-        )
+        ((num_cpus::get() / 2) as u16).clamp(1, DEFAULT_EXECUTION_CONCURRENCY_LEVEL)
     } else {
         node_config.execution.concurrency_level
     };