Dump the HTTP response headers at TRACE level
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3314>
request->state = DOWNLOAD_REQUEST_STATE_HEADERS_RECEIVED;
request->status_code = _soup_message_get_status (msg);
request->headers = handle_response_headers (transfer);
+ GST_TRACE ("request URI %s range %" G_GINT64_FORMAT " %"
+ G_GINT64_FORMAT " headers: %" GST_PTR_FORMAT,
+ request->uri, request->range_start, request->range_end,
+ request->headers);
if (SOUP_STATUS_IS_SUCCESSFUL (request->status_code)
|| SOUP_STATUS_IS_REDIRECTION (request->status_code)) {