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-rw-r--r--lib/http2.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/http2.c b/lib/http2.c
index 9380ca7cf..350642019 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) {