fix lint

Author: theharveyz

client/pool.go

@@ -472,7 +472,7 @@ func (pool *Pool) ping(conn *Conn) error {
 	if err != nil {
 		pool.logFunc(`Pool: ping query fail: %s`, err.Error())
 	} else {
-		conn.SetDeadline(time.Time{})
+		_ = conn.SetDeadline(time.Time{})
 	}
 	return err
 }