http2: make sure pause is done on HTTP

Since the function is called for any protocol, we can't assume that the
HTTP struct is there without first making sure it is HTTP.

Reported-by: Denis Goleshchikhin
Fixes #7079
Closes #7080

diff --git a/lib/http2.c b/lib/http2.c
index ac04d348c4957040f696e1ffd6b2b7e40a661ddb..bc604ce1551a50dfdf5c36962db634e36a1af470 100644 (file)
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -2353,7 +2353,8 @@ CURLcode Curl_http2_stream_pause(struct Curl_easy *data, bool pause)
   DEBUGASSERT(data);
   DEBUGASSERT(data->conn);
   /* if it isn't HTTP/2, we're done */
-  if(!data->conn->proto.httpc.h2)
+  if(!(data->conn->handler->protocol & PROTO_FAMILY_HTTP) ||
+     !data->conn->proto.httpc.h2)
     return CURLE_OK;
 #ifdef NGHTTP2_HAS_SET_LOCAL_WINDOW_SIZE
   else {