refine code style

core/stores/cache/cachenode.go

@@ -175,12 +175,12 @@ func (c cacheNode) doTake(v interface{}, key string, query func(v interface{}) e
 	}
 	if fresh {
 		return nil
-	} else {
-		// got the result from previous ongoing query
-		c.stat.IncrementTotal()
-		c.stat.IncrementHit()
 	}
 
+	// got the result from previous ongoing query
+	c.stat.IncrementTotal()
+	c.stat.IncrementHit()
+
 	return jsonx.Unmarshal(val.([]byte), v)
 }