From b9c51f518bf71b2bf8db28ed49759612a634fc1d Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Fri, 31 Jan 2014 10:13:36 +0100
Subject: [PATCH] Sentinel: check arity for SENTINEL MASTER command.

This fixes issue #1530.
---
 src/sentinel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sentinel.c b/src/sentinel.c
index 46ee96d62..d5d4d928e 100644
--- a/src/sentinel.c
+++ b/src/sentinel.c
@@ -2384,6 +2384,7 @@ void sentinelCommand(redisClient *c) {
         /* SENTINEL MASTER <name> */
         sentinelRedisInstance *ri;
 
+        if (c->argc != 3) goto numargserr;
         if ((ri = sentinelGetMasterByNameOrReplyError(c,c->argv[2]))
             == NULL) return;
         addReplySentinelRedisInstance(c,ri);