BUG/MINOR: mux-fcgi: Set flags on the right stream field for empty FCGI_STDOUT

In fcgi_strm_handle_empty_stdout(), the FCGI_SF_ES_RCVD flag is set on "->state"
stream field instead of "->flags". It is obviously wrong. This bug is not
noticeable because the right state is set in the fcgi_process_demux() function a
bit later.

This patch must be backported as far as 2.1.
1 file changed