BUG/MINOR: mux-h2: Check H2_SF_BODY_TUNNEL on H2S flags and not demux frame ones

In h2c_frt_stream_new(), H2_SF_BODY_TUNNEL flags was tested on demux frame
flags (h2c->dff) instead of the h2s flags.  By chance, it is a noop test
becasue H2_SF_BODY_TUNNEL value, once converted to an int8_t, is 0.

It is a 2.8-specific issue. No backport needed.
1 file changed