reflect another top request change in master

This reverts commit 532fdef2.

Ref:	d67993451bda7eeb7c0ea3c5528a8353f283a190

src/vmod_topvar.c

@@ -78,17 +78,10 @@ static void *
 state_l(VRT_CTX, void *v, size_t sz)
 {
 	struct vmod_priv *t;
-	struct ws *ws;
 
 	top_common(ctx, t, v);
 
-	if (ctx->req->top)
-		ws = ctx->req->top->topreq->ws;
-	else
-		ws = ctx->req->ws;
-
-	t->priv = WS_Alloc(ws, sz);
-
+	t->priv = WS_Alloc(ctx->req->topreq->ws, sz);
 	if (t->priv == NULL) {
 		VRT_fail(ctx, "out of workspace");
 		return (NULL);