From 0fd2f223dda30168bfa0e1a7b71ef29b21dc249d Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Mon, 25 Jan 2021 22:28:01 +0900
Subject: fixup! ngtcp2: Fix http3 upload stall

---
 lib/vquic/ngtcp2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/vquic/ngtcp2.c b/lib/vquic/ngtcp2.c
index 9f8cebf24..f8b338b3b 100644
--- a/lib/vquic/ngtcp2.c
+++ b/lib/vquic/ngtcp2.c
@@ -1838,7 +1838,7 @@ static CURLcode ng_flush_egress(struct Curl_easy *data,
         return CURLE_SEND_ERROR;
       }
     }
-    else if(ndatalen > 0) {
+    else if(ndatalen >= 0) {
       rv = nghttp3_conn_add_write_offset(qs->h3conn, stream_id, ndatalen);
       if(rv != 0) {
         failf(data, "nghttp3_conn_add_write_offset returned error: %s\n",
-- 
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