Close race on req->wrk clearing introduced in 6f2e1bcd
Close race on req->wrk clearing introduced in 6f2e1bcd

The disembarking thread would clear the req->wrk pointer in
CNT_Request. The req could have already been rescheduled on another
worker at this point, causing the req->wrk to be cleared while
processing. Change back to not clearing the pointer for
REQ_FSM_DISEMBARK (it's already been done under mutex in HSH_Lookup
anyways).

Fixes: #1488

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