diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/driver/client.go b/src/vendor/github.com/xelabs/go-mysqlstack/driver/client.go
index f888fa76..60c0f923 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/driver/client.go
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/driver/client.go
@@ -388,7 +388,6 @@ func (c *conn) Close() error {
 		select {
 		case <-ctx.Done():
 			c.Cleanup()
-			close(quitCh)
 		case <-quitCh:
 			c.Cleanup()
 		}