优化代码

internal/firewalls/firewall_firewalld.go

@@ -27,6 +27,8 @@ func NewFirewalld() *Firewalld {
 		err := cmd.Run()
 		if err == nil {
 			firewalld.exe = path
+			// TODO check firewalld status with 'firewall-cmd --state' (running or not running),
+			//      but we should recover the state when firewalld state changes, maybe check it every minutes
 			firewalld.isReady = true
 			firewalld.init()
 		}