req_fsm: Avoid misleading Timestamp:Process

When `vcl_deliver` does not return `deliver` the timestamp ends
up being a duplicate of the `synth` equivalent or the `restart`
timestamp.

bin/varnishd/cache/cache_req_fsm.c

@@ -233,8 +233,6 @@ cnt_deliver(struct worker *wrk, struct req *req)
 	req->t_resp = W_TIM_real(wrk);
 	VCL_deliver_method(req->vcl, wrk, req, NULL, NULL);
 
-	VSLb_ts_req(req, "Process", W_TIM_real(wrk));
-
 	assert(req->restarts <= cache_param->max_restarts);
 
 	if (wrk->vpi->handling != VCL_RET_DELIVER) {
@@ -259,6 +257,8 @@ cnt_deliver(struct worker *wrk, struct req *req)
 		return (REQ_FSM_MORE);
 	}
 
+	VSLb_ts_req(req, "Process", W_TIM_real(wrk));
+
 	assert(wrk->vpi->handling == VCL_RET_DELIVER);
 
 	if (IS_TOPREQ(req) && RFC2616_Do_Cond(req))

bin/varnishtest/tests/s00004.vtc

@@ -30,7 +30,6 @@ logexpect l1 -v v1 -g request {
 	expect * =	Timestamp	{Start: \S+ 0\.000000 0\.000000}
 	expect * =	Timestamp	{Req: \S+ 0\.\d+ 0\.\d+}
 	expect * =	Timestamp	{Fetch: \S+ [0-4]\.\d+ [0-4]\.\d+}
-	expect * =	Timestamp	{Process: \S+ 2\.\d+ 0\.\d+}
 	expect * =	Timestamp	{Restart: \S+ 2\.\d+ 0\.\d+}
 	expect * =	End
 	expect 0 1002	Begin		bereq