Don't keep looking at req->obj->http once we have req->resp populated.

bin/varnishd/cache/cache_http1_deliver.c

@@ -93,7 +93,7 @@ v1d_dorange(struct req *req, struct busyobj *bo, const char *r)
 
 	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
 	CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
-	assert(http_GetStatus(req->obj->http) == 200);
+	assert(http_GetStatus(req->resp) == 200);
 
 	/* We must snapshot the length if we're streaming from the backend */
 	if (bo != NULL)

bin/varnishd/cache/cache_req_fsm.c

@@ -163,7 +163,7 @@ cnt_deliver(struct worker *wrk, struct req *req)
 
 	if (!(req->objcore->flags & OC_F_PASS)
 	    && req->esi_level == 0
-	    && http_GetStatus(req->obj->http) == 200
+	    && http_GetStatus(req->resp) == 200
 	    && req->http->conds && RFC2616_Do_Cond(req)) {
 		http_PutResponse(req->resp, "HTTP/1.1", 304, NULL);
 		req->wantbody = 0;

bin/varnishd/cache/cache_rfc2616.c

@@ -363,7 +363,7 @@ RFC2616_Do_Cond(const struct req *req)
 	}
 
 	if (http_GetHdr(req->http, H_If_None_Match, &p) &&
-	    http_GetHdr(req->obj->http, H_ETag, &e)) {
+	    http_GetHdr(req->resp, H_ETag, &e)) {
 		if (strcmp(p,e) != 0)
 			return (0);
 		do_cond = 1;