From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 20 Aug 2018 11:19:08 +0000 (+0200)
Subject: http2: avoid set_stream_user_data() before stream is assigned
X-Git-Tag: curl-7_61_1~44
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e29ff2be2f4ae0dace025672e0289104d58adb2a;p=thirdparty%2Fcurl.git

http2: avoid set_stream_user_data() before stream is assigned

... before the stream is started, we have it set to -1.

Fixes #2894
Closes #2898
---

diff --git a/lib/http2.c b/lib/http2.c
index 9380ca7cf6..350642019d 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -1178,7 +1178,8 @@ void Curl_http2_done(struct connectdata *conn, bool premature)
       httpc->pause_stream_id = 0;
     }
   }
-  if(http->stream_id) {
+  /* -1 means unassigned and 0 means cleared */
+  if(http->stream_id > 0) {
     int rv = nghttp2_session_set_stream_user_data(httpc->h2,
                                                   http->stream_id, 0);
     if(rv) {