From a910f1442ef85baae53bfd50ef2c8ed459526bc5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20Mart=C3=ADn?= <oleurud@gmail.com>
Date: Thu, 2 Aug 2018 11:35:54 +0200
Subject: [PATCH] explicit error return

---
 lib/cartodb/backends/template_maps.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/cartodb/backends/template_maps.js b/lib/cartodb/backends/template_maps.js
index e2c53e8c..00f0cd2e 100644
--- a/lib/cartodb/backends/template_maps.js
+++ b/lib/cartodb/backends/template_maps.js
@@ -74,7 +74,10 @@ TemplateMaps.prototype._redisCmd = function(redisFunc, redisArgs, callback) {
 
         redisClient[redisFunc.toUpperCase()](...redisArgs, (err, data) => {
             this.redis_pool.release(this.db_signatures, redisClient);
-            return callback(err, data);
+            if (err) {
+                return callback(err);
+            }
+            return callback(null, data);
         });
     });
 };