From c33ef454f09b4e6eefcad77b773d112223837c36 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Mon, 22 Oct 2018 12:24:02 +0200
Subject: [PATCH] Remove useless complexity from MSET implementation.

---
 src/t_string.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/t_string.c b/src/t_string.c
index e121df73..db6f7aa6 100644
--- a/src/t_string.c
+++ b/src/t_string.c
@@ -301,24 +301,22 @@ void mgetCommand(client *c) {
 }
 
 void msetGenericCommand(client *c, int nx) {
-    int j, busykeys = 0;
+    int j;
 
     if ((c->argc % 2) == 0) {
         addReplyError(c,"wrong number of arguments for MSET");
         return;
     }
+
     /* Handle the NX flag. The MSETNX semantic is to return zero and don't
-     * set nothing at all if at least one already key exists. */
+     * set anything if at least one key alerady exists. */
     if (nx) {
         for (j = 1; j < c->argc; j += 2) {
             if (lookupKeyWrite(c->db,c->argv[j]) != NULL) {
-                busykeys++;
+                addReply(c, shared.czero);
+                return;
             }
         }
-        if (busykeys) {
-            addReply(c, shared.czero);
-            return;
-        }
     }
 
     for (j = 1; j < c->argc; j += 2) {