Communicate the session close reason as a negative in the sess->fd so the SessClose VSL can reporte it correctly.
Communicate the session close reason as a negative in the sess->fd
so the SessClose VSL can reporte it correctly.

Probably broken by: Martin ?

mrhmouse/Varnish-Cache,chrismoulton/Varnish-Cache,mrhmouse/Varnish-Cache,varnish/Varnish-Cache,franciscovg/Varnish-Cache,ajasty-cavium/Varnish-Cache,ajasty-cavium/Varnish-Cache,ajasty-cavium/Varnish-Cache,zhoualbeart/Varnish-Cache,gauthier-delacroix/Varnish-Cache,franciscovg/Varnish-Cache,franciscovg/Varnish-Cache,ajasty-cavium/Varnish-Cache,franciscovg/Varnish-Cache,mrhmouse/Varnish-Cache,gauthier-delacroix/Varnish-Cache,gquintard/Varnish-Cache,zhoualbeart/Varnish-Cache,zhoualbeart/Varnish-Cache,chrismoulton/Varnish-Cache,varnish/Varnish-Cache,gauthier-delacroix/Varnish-Cache,gauthier-delacroix/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,chrismoulton/Varnish-Cache,feld/Varnish-Cache,chrismoulton/Varnish-Cache,varnish/Varnish-Cache,feld/Varnish-Cache,feld/Varnish-Cache,varnish/Varnish-Cache,gquintard/Varnish-Cache,mrhmouse/Varnish-Cache,feld/Varnish-Cache,varnish/Varnish-Cache,gauthier-delacroix/Varnish-Cache,franciscovg/Varnish-Cache,gquintard/Varnish-Cache,mrhmouse/Varnish-Cache,zhoualbeart/Varnish-Cache,chrismoulton/Varnish-Cache,ajasty-cavium/Varnish-Cache,zhoualbeart/Varnish-Cache