Kepp sync.WorkerGroup.Add() outside of goroutine

The workergroup should be added before starting the worker.
The worker routine itself should not start the worker. It causes race condition.

modules/syn_scan/syn_scan.go

@@ -227,8 +227,8 @@ func (mod *SynScanner) synScan() error {
 		mod.State.Store("progress", 0.0)
 
 		// start the collector
+		mod.waitGroup.Add(1)
 		go func() {
-			mod.waitGroup.Add(1)
 			defer mod.waitGroup.Done()
 
 			for packet := range mod.packets {

modules/wifi/wifi_assoc.go

@@ -88,9 +88,8 @@ func (mod *WiFiModule) startAssoc(to net.HardwareAddr) error {
 		}
 		return fmt.Errorf("%s is an unknown BSSID or it is in the association skip list.", to.String())
 	}
-
+	mod.writes.Add(1)
 	go func() {
-		mod.writes.Add(1)
 		defer mod.writes.Done()
 
 		// since we need to change the wifi adapter channel for each

modules/wifi/wifi_deauth.go

@@ -113,8 +113,8 @@ func (mod *WiFiModule) startDeauth(to net.HardwareAddr) error {
 		return fmt.Errorf("%s is an unknown BSSID, is in the deauth skip list, or doesn't have detected clients.", to.String())
 	}
 
+	mod.writes.Add(1)
 	go func() {
-		mod.writes.Add(1)
 		defer mod.writes.Done()
 
 		// since we need to change the wifi adapter channel for each