small fix

transport/control.go

@@ -104,9 +104,13 @@ type quotaPool struct {
 
 // newQuotaPool creates a quotaPool which has quota q available to consume.
 func newQuotaPool(q int) *quotaPool {
-	qb := &quotaPool{c: make(chan int, 1)}
+	qb := &quotaPool{
+		c: make(chan int, 1),
+	}
 	if q > 0 {
 		qb.c <- q
+	} else {
+		qb.quota = q
 	}
 	return qb
 }