From 76c59f0e44737b0046eeba02d849cf7e20dab3a7 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 14 Mar 2019 17:52:02 +0100
Subject: [PATCH] Fix ZPOP return type when COUNT=0. Related to #5799.

---
 src/t_zset.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/t_zset.c b/src/t_zset.c
index 9f74d39c..09955150 100644
--- a/src/t_zset.c
+++ b/src/t_zset.c
@@ -3145,7 +3145,7 @@ void genericZpopCommand(client *c, robj **keyv, int keyc, int where, int emitkey
         if (getLongFromObjectOrReply(c,countarg,&count,NULL) != C_OK)
             return;
         if (count <= 0) {
-            addReplyNullArray(c);
+            addReply(c,shared.emptymultibulk);
             return;
         }
     }