dir + slash key does not exist

https://github.com/chrislusf/seaweedfs/issues/1917

weed/s3api/s3api_object_handlers.go

@@ -310,8 +310,7 @@ func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, des
 		return
 	}
 	defer util.CloseResponse(resp)
-
-	if (resp.ContentLength == -1 || resp.StatusCode == 404) && !strings.HasSuffix(destUrl, "/") {
+	if resp.ContentLength == -1 || resp.StatusCode == 404 {
 		if r.Method != "DELETE" {
 			writeErrorResponse(w, s3err.ErrNoSuchKey, r.URL)
 			return