From 727dd43614ec45e23e2dedbba08b393323feaa4f Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 18 Jan 2018 12:41:05 +0100
Subject: [PATCH] Fix migrateCommand() access of not initialized byte.

---
 src/cluster.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/cluster.c b/src/cluster.c
index 97d311e1b..00fa5d4a2 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -5086,12 +5086,15 @@ try_again:
             socket_error = 1;
             break;
         }
-        if (buf0[0] == '-' || (select && buf1[0] == '-') || buf2[0] == '-') {
+        if ((password && buf0[0] == '-') ||
+            (select && buf1[0] == '-') ||
+            buf2[0] == '-')
+        {
             /* On error assume that last_dbid is no longer valid. */
             if (!error_from_target) {
                 cs->last_dbid = -1;
                 char *errbuf;
-                if (buf0[0] == '-') errbuf = buf0;
+                if (password && buf0[0] == '-') errbuf = buf0;
                 else if (select && buf1[0] == '-') errbuf = buf1;
                 else errbuf = buf2;