modules/redis: missing header

modules/redis/redis.h

+/*  Copyright (C) 2015 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <hiredis/hiredis.h>
+#include "lib/generic/array.h"
+
+/** Redis buffer size */
+#define REDIS_BUFSIZE (512 * 1024)
+#define REDIS_PORT 6379
+
+typedef array_t(redisReply *) redis_freelist_t;
+
+/** @internal Redis client */
+struct redis_cli {
+	redisContext *handle;
+	redis_freelist_t freelist;
+	char *addr;
+	unsigned database;
+	unsigned port;
+};