Support not bundling the top request

src/vmod_zipflow.c

@@ -708,7 +708,7 @@ vdp_zipsub_bytes(struct vdp_ctx *vdc, enum vdp_action act, void **priv,
 	zft = zfr->top;
 	CHECK_OBJ_NOTNULL(zft, ZIPFLOW_TOP_MAGIC);
 	if (zfr->bundle == 0)
-		return (1);
+		return (0);
 
 	assert(len >= 0);
 	r = zip_data(zft->zip, ptr, (size_t)len, act == VDP_END ? 1 : 0);