commands: Fix data race in test

Note that this is a test fix only.

helpers/general.go

@@ -415,7 +415,7 @@ func Deprecated(item, alternative string, err bool) {
 		DistinctErrorLog.Errorf("%s is deprecated and will be removed in Hugo %s. %s", item, hugo.CurrentVersion.Next().ReleaseVersion(), alternative)
 	} else {
 		var warnPanicMessage string
-		if !loggers.PanicOnWarning {
+		if !loggers.PanicOnWarning.Load() {
 			warnPanicMessage = "\n\nRe-run Hugo with the flag --panicOnWarning to get a better error message."
 		}
 		DistinctWarnLog.Warnf("%s is deprecated and will be removed in a future release. %s%s", item, alternative, warnPanicMessage)

helpers/general_test.go

@@ -65,10 +65,10 @@ func TestDistinctLoggerDoesNotLockOnWarningPanic(t *testing.T) {
 
 	// Set PanicOnWarning to true to reproduce issue 9380
 	// Ensure global variable loggers.PanicOnWarning is reset to old value after test
-	if loggers.PanicOnWarning == false {
-		loggers.PanicOnWarning = true
+	if !loggers.PanicOnWarning.Load() {
+		loggers.PanicOnWarning.Store(true)
 		defer func() {
-			loggers.PanicOnWarning = false
+			loggers.PanicOnWarning.Store(false)
 		}()
 	}